# Brunswick–Lüneburg

The Duchy of Brunswick and Lüneburg (German: Herzogtum Braunschweig und Lüneburg), commonly known as the Duchy of Brunswick-Lüneburg or Brunswick-Lüneburg, was an imperial principality of the Holy Roman Empire in the territory of present day Lower Saxony.
In 1235, Otto I was enfeoffed with the newly founded Duchy of Brunswick-Lüneburg at the Court of Mainz. It was based on the two castles in Brunswick and Lüneburg and the associated estate of the House of Welf. In 1269 there was a first division between the brothers Albrecht and Johann. The resulting principalities of Brunswick and Lüneburg together continued to form the Duchy of Brunswick-Lüneburg.
The history of the duchy and the constituent principalities was marked by further divisions and mergers of the principalities. The constituent principalities existed until the end of the Holy Roman Empire in 1806. At the Congress of Vienna, the Kingdom of Hanover and the Duchy of Brunswick were created as successor states. To this day, members of the House of Hanover call themselves Duke of Brunswick and Lüneburg.

## History

When the Imperial ban was placed on Henry the Lion in 1180, he lost his titles as Duke of Saxony and Duke of Bavaria. He went into exile for several years, but was then allowed to stay on the (allodial) estates inherited from his mother's side until the end of his life.
At the Imperial Diet of 1235 in Mainz, as part of the reconciliation between the Hohenstaufen and Welf families, Henry's grandson, Otto the Child, transferred his estates to Emperor Frederick II and was enfeoffed in return with the newly created Duchy of Brunswick-Lüneburg, which was formed from the estates transferred to the Emperor as well as other large areas of the imperial fisc. After his death in 1252, he was succeeded by his sons, Albert the Tall and John, who ruled the dukedom jointly.
In 1269, the duchy was divided, Albert receiving the southern part of the state around Brunswick and John the northern territories in the area of Lüneburg. The towns of Lüneburg and Brunswick remained in the overall possession of the House of Welf until 1512 and 1671 respectively. In 1571 the Amt of Calvörde became an exclave of the Duchy. The various parts of the duchy were further divided and re-united over the centuries, all of them being ruled by the Welf or Guelph dynasty, who maintained close relations with one another—not infrequently by marrying cousins—a practice far more common than is the case today, even among the peasantry of the Holy Roman Empire, for the contemporary salic inheritance laws encouraged the practice of retaining control of lands and benefits. The seats of power moved in the meantime from Brunswick and Lüneburg to Celle and Wolfenbüttel as the towns asserted their independence.
In the 18th century, a number of soldiers and officers from the duchy fought for the British in the American Revolutionary War, such as at the Battle of Bennington and Battles of Saratoga.

## History of the subordinate principalities

The subsequent history of the dukedom and its subordinate principalities was characterised by numerous divisions and reunifications. The subordinate states that were repeatedly created, and which had the legal status of principalities, were generally named after the residence of their rulers.
The estates of the different dynastic lines could be inherited by a side line when a particular family died out. For example, over the course of the centuries there were the Old, Middle and New Houses (or Lines) of Brunswick, and the Old, Middle and New Houses of Lüneburg. The number of simultaneously reigning dynastic lines varied from two to five.

### Principality of Brunswick-Wolfenbüttel

In 1269, the Principality of Brunswick was formed following the first division of the Duchy of Brunswick-Lüneburg. In 1432, as a result of increasing tensions with the townsfolk of Brunswick, the Brunswick Line moved their Residence to Wolfenbüttel, into the water castle, which was expanded into a Schloss, whilst the town was developed into a royal seat. The name Wolfenbüttel was given to this principality. From 1546, Wolfenbüttel became the residence of the senior prince of Brunswick-Lüneburg, Henry, Duke of Brunswick-Dannenberg.
With sole rights to the Duchy of Brunswick-Lüneburg, he provided a conditional sub-lease of the Principality of Lüneburg to the princes of Calenberg with the conditions of payment to the Wolfenbüttel heirs (Chief of the House), together with the guarantee that only his descendants would inherit this senior principality of Wolfenbüttel. Not until 1753/1754 was the Residence moved back to Brunswick, into the newly built Brunswick Palace.
Following the Congress of Vienna and territorial adjustments the principality formed the basis of the new Duchy of Brunswick.

### Principality of Calenberg (later Electorate of Hanover)

In 1432, the estates gained by the Principality of Brunswick-Wolfenbüttel between the Deister and Leine split away as the Principality of Calenberg. To the north, this new state bordered on the County of Hoya near Nienburg and extended from there in a narrow, winding strip southwards up the River Leine through Wunstorf and Hanover where it reached the Principality of Wolfenbüttel. In 1495, it was expanded around Göttingen. In 1584, it returned to the Wolfenbüttel Line.
In 1634, as a result of inheritance distributions, it went to the House of Lüneburg, before becoming an independent principality again in 1635, when it was given to George, younger brother of Prince Ernest II of Lüneburg, who chose Hanover as his Residenz. New territory was added in 1665 in the vicinity of Grubenhagen and in 1705 around the Principality of Lüneburg. In 1692, Duke Ernest Augustus from the Calenberg Line, acquired the right to be a prince-elector as the Prince-Elector of Brunswick-Lüneburg. Colloquially, the Electorate was also known as the Electorate of Hanover or as Kurhannover. In 1814, it was succeeded by the Kingdom of Hanover.

### Principality of Lüneburg

The Principality of Lüneburg emerged alongside the Principality of Brunswick in 1269 when the inheritance of the Duchy was divided. After the death of Duke George William of Brunswick-Lüneburg in 1705, King George I inherited the state of Lüneburg, being both the benefactor of Georges William's 1658 renunciation in favour of his younger brother Ernest Augustus and the husband of the Duke's morganatic daughter, Sophie Dorothea, later known as the "Princess of Ahlden". It was united with the Principality of Calenberg, which had been elevated in 1692 into the Electorate.

### Principality of Göttingen

The southernmost principality in the Duchy of Brunswick-Lüneburg stretched from Münden in the south down the River Weser to Holzminden. In the east it ran through Göttingen along the River Leine via Northeim to Einbeck. It emerged in 1345 as the result of a division of the Principality of Brunswick and was united in 1495 with Calenberg.

### Principality of Grubenhagen

From 1291 to 1596, Grubenhagen was an independent principality, its first ruler being Henry the Admirable, son of Albert of Brunswick-Wolfenbüttel. The state lay along the northern part of the Solling hills and the River Leine near Einbeck and north of the Eichsfeld on and in the southwestern Harz. After being split in the course of the years into smaller and smaller principalities, Grubenhagen returned in 1596 to Brunswick-Wolfenbüttel and was ceded to the Calenberg line in 1665.

### Other branches

Other branches that did not have full sovereignty included the states of Dannenberg, Harburg, Gifhorn, Bevern, Osterode, Herzberg, Salzderhelden, and Einbeck.
While a total of about a dozen subdivisions that existed, some were only dynastic and not recognised as states of the Empire, which at one time had over 1500 such legally recognized entities. In the List of Reichstag participants (1792), the following four subdivisions of Brunswick-Lüneburg had recognized representation:
* The Principality of Lüneburg.
* The Principality of Calenberg-Göttingen, merged under Eric I of Brunswick-Wolfenbüttel in 1495.
* The Principality of Grubenhagen.
* The Principality of Brunswick-Wolfenbüttel.
By 1705 only two Dukes of Brunswick-Lüneburg survived, one ruling Calenberg, Lüneburg and other possessions, and the other ruling Wolfenbüttel.

### From Lüneburg to Hanover

One of the dynastic lines was that of the princes of Lüneburg, which, in 1635, acquired Calenberg for George, a junior member of the family who set up residence in the city of Hanover. His son Christian Louis, and his brothers inherited Celle in 1648 and thereafter shared it and Calenberg between themselves; a closely related branch of the family ruled separately in Wolfenbüttel.
The territories of Calenberg and Lüneburg-Celle were made an Electorate by the Emperor Leopold I in 1692 in expectation of the imminent inheritance of Celle by the Duke of Calenberg, though the actual dynastic union of the territories did not occur until 1705 under his son George I Louis, and the Electorate was not officially approved by the Imperial Diet until 1708.
The resulting state was known under many different names: Brunswick-Lüneburg, Calenberg, Calenberg-Celle; its ruler was often known as the "Elector of Hanover". Coincidentally, in 1701, the Duke of Brunswick-Lüneburg found himself in the line of succession for the British crown, later confirmed in 1707 by the Act of Union, which he subsequently inherited, thereby creating a personal union of the two crowns on 20 October 1714.
After a little over a decade, the matter of the disputed electorate was settled upon the heir, and the new Duke of Brunswick-Lüneburg (acceded as duke on 23 January 1698), George I Louis, was able to style himself the Elector of Brunswick and Lüneburg from 1708. It was not just happenstance but also religion-driven politics that brought about the circumstance that he was also put into the line of succession for the British crown by the Act of Settlement— which was written to ensure a Protestant succession to the thrones of Scotland and England at a time when anti-Catholic sentiment ran high in much of Northern Europe and much of Great Britain.
In this event, George I succeeded his second cousin Anne, Queen of Great Britain—the last reigning member of the House of Stuart—and subsequently formed a personal union on August 1st, 1714 between the British crown and the duchy of Brunswick-Lüneburg (electorate of Hanover), which would last until well after the end of the Napoleonic wars more than a century later—including even through the dissolution of the Holy Roman Empire and the rise of a new successor kingdom. In that manner, the "Electorate of Hanover" (the core duchy) was enlarged with the addition of other lands and became the Kingdom of Hanover in 1814 at the peace conferences (Congress of Vienna) settling the future shape of Europe in the aftermath of the Napoleonic wars.

### History of the relationship to the British Crown

The first Hanoverian King of Great Britain, George I of Great Britain, was the reigning Duke of Brunswick-Lüneburg, and was finally made an official and recognized prince-elector of the Holy Roman Empire in 1708. His possessions were enlarged in 1706 when the hereditary lands of the Calenberg branch of the Dukes of Brunswick-Lüneburg merged with the lands of the Lüneburg-Celle branch to form the Electorate of Hanover. Subsequently, George I was referred to as Elector of Hanover.
In 1700 and 1701, when the English Parliament had addressed the question of an orderly succession, with a particular religious bias toward a Protestant ruler, from the childless ruling Queen Anne (House of Stuart), it passed the provisions of the Act of Settlement 1701 to Sophia of Hanover, granddaughter of James I. Sophia predeceased Queen Anne by a few weeks, but her son and heir, George I, succeeded as King of Great Britain when Anne, his second cousin, died in August 1714. Great Britain and Hanover remained united in personal union until the accession of Queen Victoria in 1837.
George I was followed by his son George II and then his great-grandson George III, the latter retaining the position of elector even after the Holy Roman Empire was abolished by its last emperor in 1806. George III contested the validity of the dissolution of the Empire and maintained separate consular offices and staff for the Electorate of Hanover until the Congress of Vienna at the war's end. After the fall of Napoleon, George III regained his lands plus lands from Prussia as King of Hanover, whilst giving up some other smaller scattered territories.

## Duchy of Brunswick

The Wolfenbüttel Line retained its independence, except from 1807 to 1813, when it and Hanover were merged into the Napoleonic Kingdom of Westphalia. The Congress of Vienna of 1815 turned it into an independent state under the name Duchy of Brunswick. The Duchy remained independent and joined first the North German Confederation and then the German Empire in 1871.
When the Wolfenbüttel Line became extinct in 1884, the German government withheld the rightful heir, the Crown Prince of Hanover, from taking control, instead installing a regency. Decades later, the families were reconciled by the marriage of the Crown Prince's son to the Emperor's only daughter, and Wilhelm II, German Emperor, allowed his son-in-law to assume rule in 1913 (his father having renounced his own right).

## Dukes of Brunswick-Lüneburg and successors
### House of Welf
#### Partitions of Brunswick-Lüneburg under Welf rule

Lordship of Lüneburg (1126-1235) Raised to: Duchy of Brunswick-Lüneburg (1235–1269) :
| Brunswick (1269–1291) | Brunswick (1269–1291) | Brunswick (1269–1291) | Brunswick (1269–1291) | Brunswick (1269–1291) | Brunswick (1269–1291) | Lüneburg (1st creation) (1269–1369) | Lüneburg (1st creation) (1269–1369) | Lüneburg (1st creation) (1269–1369) | Lüneburg (1st creation) (1269–1369) |
| Grubenhagen (1291–1596) | Grubenhagen (1291–1596) | | | Wolfenbüttel (1st creation) (1291–1292) | Wolfenbüttel (1st creation) (1291–1292) | | Lüneburg (1st creation) (1269–1369) | Lüneburg (1st creation) (1269–1369) | Lüneburg (1st creation) (1269–1369) | Lüneburg (1st creation) (1269–1369) |
| Grubenhagen (1291–1596) | Grubenhagen (1291–1596) | Göttingen (1291–1463) | Göttingen (1291–1463) | Wolfenbüttel (2nd creation) (1344–1400) | Wolfenbüttel (2nd creation) (1344–1400) | | Lüneburg (1st creation) (1269–1369) | Lüneburg (1st creation) (1269–1369) | Lüneburg (1st creation) (1269–1369) | Lüneburg (1st creation) (1269–1369) |
| Grubenhagen (1291–1596) | Grubenhagen (1291–1596) | Göttingen (1291–1463) | Göttingen (1291–1463) | | | Lüneburg under Ascanian rule (1373–1388) | Lüneburg under Ascanian rule (1373–1388) | Lüneburg under Ascanian rule (1373–1388) | Lüneburg under Ascanian rule (1373–1388) |
| Lüneburg (2nd creation) (1388–1705) ||||||
| Grubenhagen (1291–1596) | Grubenhagen (1291–1596) | Göttingen (1291–1463) | Göttingen (1291–1463) | | Wolfenbüttel (3rd creation) (1409–1485) | | | | |
| Grubenhagen (1291–1596) | Grubenhagen (1291–1596) | Calenberg (1st creation) (1432–1584) | Calenberg (1st creation) (1432–1584) | Calenberg (1st creation) (1432–1584) | | | | | |
| | | | | (annexed Grubenhagen 1617) | (annexed Grubenhagen 1617) | (annexed Grubenhagen 1617) | (annexed Grubenhagen 1617) | (annexed Grubenhagen 1617) | (annexed Grubenhagen 1617) |
| | | Calenberg (2nd creation) (1634–1692) Recalled Hanover 1692 | Calenberg (2nd creation) (1634–1692) Recalled Hanover 1692 | | (annexed Grubenhagen 1617) | (annexed Grubenhagen 1617) | (annexed Grubenhagen 1617) | (annexed Grubenhagen 1617) | (annexed Grubenhagen 1617) | (annexed Grubenhagen 1617) |
| Electorate of Hanover (1692–1866) ||||||||
| Electorate of Hanover (1692–1866) ||
| Electorate of Hanover (1692–1866) ||
| Annexed by Prussia ||||||||

#### Table of rulers

| Ruler | Ruler | Born | Reign | Death | Ruling part | Consort | Notes |
| Henry (I) the Proud | | 1108 | 1126-1139 | 20 October 1139 | Lordship of Lüneburg | Gertrude of Süpplingenburg 29 May 1127 Lech, Augsburg one child | Son of Henry IX, Duke of Bavaria. Also Duke of Bavaria (1126-1138) and Duke of Saxony (1137-1139). In a power struggle with King Conrad III of Germany, Henry X lost his duchy to the King, who granted it to his follower Leopold Margrave of Austria, but kept his allodial properties. |
| Regency of Gertrude of Süpplingenburg (1139-1142) | Regency of Gertrude of Süpplingenburg (1139-1142) | Regency of Gertrude of Süpplingenburg (1139-1142) | Regency of Gertrude of Süpplingenburg (1139-1142) | Regency of Gertrude of Süpplingenburg (1139-1142) | Regency of Gertrude of Süpplingenburg (1139-1142) | Regency of Gertrude of Süpplingenburg (1139-1142) | Inherited Brunswick from his mother after her death in 1143. Also Duke of Saxony (1142-1180) and Duke of Bavaria (1156-1180). When Frederick I, Holy Roman Emperor, became king of Germany, he restored Bavaria to the Welf line. |
| Henry (II) the Lion | | 1129/31 | 1139-1195 | 6 August 1195 | Lordship of Lüneburg | Clementia of Zähringen 1147 three children Matilda of England 1168 five children | Inherited Brunswick from his mother after her death in 1143. Also Duke of Saxony (1142-1180) and Duke of Bavaria (1156-1180). When Frederick I, Holy Roman Emperor, became king of Germany, he restored Bavaria to the Welf line. |
| William Longsword | | 11 April 1184 | 1195-1213 | 12 December 1213 | Lordship of Lüneburg | Helena of Denmark 1202 Hamburg one child | |
| Regency of Otto IV, Holy Roman Emperor (1213-1218) | Regency of Otto IV, Holy Roman Emperor (1213-1218) | Regency of Otto IV, Holy Roman Emperor (1213-1218) | Regency of Otto IV, Holy Roman Emperor (1213-1218) | Regency of Otto IV, Holy Roman Emperor (1213-1218) | Regency of Otto IV, Holy Roman Emperor (1213-1218) | Regency of Otto IV, Holy Roman Emperor (1213-1218) | He was raised to Duke and recognised as such in 1235, by Frederick II, Holy Roman Emperor |
| Otto I the Child | | 1204 | 1213–1252 | 9 June 1252 | Brunswick-Lüneburg | Matilda of Brandenburg 1228 ten children | He was raised to Duke and recognised as such in 1235, by Frederick II, Holy Roman Emperor |
| Albert I the Tall | | 1236 | 1252-1279 | 15 August 1279 | Brunswick (in Brunswick-Lüneburg until 1269) | Elisabeth of Brabant 1254 no children Alexia of Montferrat 1263 seven children | Children of Otto I, they shared rule of the land until 1269. Albert became Prince of Brunswick and John a Prince of Luneburg. |
| John | | 1242 | 1252-1277 | 13 December 1277 | Lüneburg (in Brunswick-Lüneburg until 1269) | Liutgard of Holstein-Itzehoe 1265 five children | Children of Otto I, they shared rule of the land until 1269. Albert became Prince of Brunswick and John a Prince of Luneburg. |
| All Welf lines continued to bear the title "Duke of Brunswick-Lüneburg" between the division of 1269 and the end of the Holy Roman Empire in 1806. This was an additional title to the representation of their actual territorial lordship. However, as this is list of rulers, the list goes beyond the use of the title, going through all generations until the end of the noble family representation in the land, in 1918. ||||||||
| Regencies of Albert I, Duke of Brunswick-Lüneburg (1277-1279) and Conrad of Brunswick-Lüneburg, Prince-Bishop of Verden (1277-1282) | Regencies of Albert I, Duke of Brunswick-Lüneburg (1277-1279) and Conrad of Brunswick-Lüneburg, Prince-Bishop of Verden (1277-1282) | Regencies of Albert I, Duke of Brunswick-Lüneburg (1277-1279) and Conrad of Brunswick-Lüneburg, Prince-Bishop of Verden (1277-1282) | Regencies of Albert I, Duke of Brunswick-Lüneburg (1277-1279) and Conrad of Brunswick-Lüneburg, Prince-Bishop of Verden (1277-1282) | Regencies of Albert I, Duke of Brunswick-Lüneburg (1277-1279) and Conrad of Brunswick-Lüneburg, Prince-Bishop of Verden (1277-1282) | Regencies of Albert I, Duke of Brunswick-Lüneburg (1277-1279) and Conrad of Brunswick-Lüneburg, Prince-Bishop of Verden (1277-1282) | Regencies of Albert I, Duke of Brunswick-Lüneburg (1277-1279) and Conrad of Brunswick-Lüneburg, Prince-Bishop of Verden (1277-1282) | His rule was marked by several feuds, financed by pledges (Verpfändungen), involving border and property disputes with his neighbours. Otto restricted the rights of the knights and safeguarded public order. |
| Otto II the Strict | | 1266 | 1277-1330 | 10 April 1330 | Lüneburg | Matilda of Bavaria 1288 five children | His rule was marked by several feuds, financed by pledges (Verpfändungen), involving border and property disputes with his neighbours. Otto restricted the rights of the knights and safeguarded public order. |
| Henry I the Admirable | | August 1267 | 1279–1322 | 7 September 1322 | Grubenhagen (until 1291 in Brunswick) | Agnes of Meissen 1282 sixteen children | Children of Albert I, ruled jointly. In 1291 divided the land: Henry received Grubenhagen, William Wolfenbüttel and Albert Göttingen. William died without descendants, and Albert reunited his land with his brother's. Wolfenbüttel became part of Göttingen. |
| William I | | 1270 | 1279-1292 | 30 September 1292 | Wolfenbüttel (until 1291 in Brunswick) | Elisabeth of Hesse 190 no children | Children of Albert I, ruled jointly. In 1291 divided the land: Henry received Grubenhagen, William Wolfenbüttel and Albert Göttingen. William died without descendants, and Albert reunited his land with his brother's. Wolfenbüttel became part of Göttingen. |
| Albert II the Fat | | 1268 | 1279-1318 | 22 September 1318 | Göttingen (until 1291 in Brunswick) | Rixa of Werle 1284 ten children | Children of Albert I, ruled jointly. In 1291 divided the land: Henry received Grubenhagen, William Wolfenbüttel and Albert Göttingen. William died without descendants, and Albert reunited his land with his brother's. Wolfenbüttel became part of Göttingen. |
| Otto (I) the Mild | | 24 June 1292 | 1318–1344 | 30 August 1344 | Göttingen | Judith of Hesse 1311 no children Agnes of Brandenburg-Salzwedel 1319 no children | Sons of Albert II, ruled jointly. After Otto's death Magnus and Ernest divided the land: Magnus received Wolfenbüttel and Ernest Göttingen. |
| Ernest I | | 1305 | 1318–1367 | 24 April 1367 | Göttingen | Elizabeth of Hesse 1337 three children | Sons of Albert II, ruled jointly. After Otto's death Magnus and Ernest divided the land: Magnus received Wolfenbüttel and Ernest Göttingen. |
| Magnus I the Pious | | 1304 | 1318–1344 | 1369 | Göttingen | Sophia of Brandenburg-Stendal 1327 eight children | Sons of Albert II, ruled jointly. After Otto's death Magnus and Ernest divided the land: Magnus received Wolfenbüttel and Ernest Göttingen. |
| Magnus I the Pious | | 1304 | 1344-1369 | 1369 | Wolfenbüttel | Sophia of Brandenburg-Stendal 1327 eight children | Sons of Albert II, ruled jointly. After Otto's death Magnus and Ernest divided the land: Magnus received Wolfenbüttel and Ernest Göttingen. |
| Henry II | | Before 1296 | 1322–1351 | After 1351 | Grubenhagen | Jutta of Brandenburg-Stendal 1318 four children Helvis of Ibelin 1324 six children | Sons of Henry I, ruled jointly. |
| Ernest I | | 1297 | 1322–1361 | 9 March 1361 | Grubenhagen | Adelheid of Everstein-Polle June 1335 nine children | Sons of Henry I, ruled jointly. |
| William | | 1298 | 1322–1360 | 1360 | Grubenhagen | Unmarried | Sons of Henry I, ruled jointly. |
| John I | | Before 1296 | 1322–1325 | After 1367 | Grubenhagen | Unmarried | Sons of Henry I, ruled jointly. |
| Otto III | | 1296 | 1330–1352 | 19 August 1352 | Lüneburg | Matilda of Mecklenburg 1311 three children | Sons of Otto II, ruled jointly. After Otto's death in 1352, William ruled alone. His death without descendants precipitated the Lüneburg War of Succession in 1370. |
| William II the Elder | | c.1300 | 1330–1369 | 23 November 1369 | Lüneburg | Hedwig of Ravensberg 7 April 1328 one child Maria After 1387 one child Sophia of Anhalt-Bernburg 12 March 1346 no children Agnes of Saxe-Lauenburg 1363 no children | Sons of Otto II, ruled jointly. After Otto's death in 1352, William ruled alone. His death without descendants precipitated the Lüneburg War of Succession in 1370. |
| Albert I | | c.1339 | 1361–1383 | 1383 | Grubenhagen | Agnes of Brunswick-Lüneburg c.1380? one child | Sons of Ernest I, ruled jointly. John II abdicated 1364 to join the clergy and Albert became sole ruler. |
| John II | | c.1339 | 1361–1364 | 18 January 1401 | Grubenhagen | Adelheid of Everstein-Polle June 1335 nine children | Sons of Ernest I, ruled jointly. John II abdicated 1364 to join the clergy and Albert became sole ruler. |
| Frederick I | | 1350 | 1361–1421 | 1421 | Grubenhagen (at Osterode) | Adelaide of Anhalt-Zerbst (d. before 1421) one child | Sons of Ernest I, ruled jointly. John II abdicated 1364 to join the clergy and Albert became sole ruler. |
| Otto (II) the Evil | | 1330 | 1367–1394 | 13 November 1394 | Göttingen | Margarethe of Jülich-Berg 1379 two children | |
| Magnus II of the Necklace (Torquatus) | | 1304 | 1369–1373 | 25 July 1373 | Wolfenbüttel (with Lüneburg) | Katherine of Anhalt-Bernburg 1327 eight children | Inherited Wolfenbüttel from his father. However, the Lüneburg War of Succession allowed his succession also in this duchy. However, the War of Succession brought, after his death, the dukes of Saxe-Wittenberg to the government. |
| After the death of Magnus II with the Necklace, a treaty (the Reconciliation of Hanover) was agreed between the widow of Magnus II and her sons and the claimers, Albert of Saxe-Wittenberg and his uncle Duke Wenceslaus I of Saxe-Wittenberg: the estates of the Principality were to pay homage both to the Welfs and to the Ascanians, and the two noble houses would govern the state alternately. Initially, the land would be given to the two Ascanians from Wittenberg, and after their death it would go to the sons of the fallen Duke Magnus II. After their death, rule of the Principality was to revert to the Ascanians. In order to underpin the agreement, in 1374 Albert of Saxe-Lüneburg married Catharina, the widow of Magnus II. The treaty also envisaged the creation of a statutory body representing the estates, which was to supervise the treaty. However, 1373–1388 would be the only period in which a Brunswick-Luneburg land was not ruled by a Welf: Albert of Saxe-Wittenberg (1373-1385) Wenceslaus I, Duke of Saxe-Wittenberg (1385-1388) In the wake of his death, Elector Wenceslas appointed Bernard, his brother-in-law, as co-regent involved him in the government. But his younger brother Henry did not agree with this ruling, and after vain attempts to reach an agreement, the fight flared up again in the spring of 1388. Elector Wenceslas had to assemble an army without the help of Bernard, supported by the town of Lüneburg. From Winsen an der Aller, he wanted to attack Celle, which was held by Henry and his mother. During the preparations Elector Wenceslas fell seriously ill and died shortly thereafter. According to legend, he was poisoned. Lüneburg continued the preparations, formed an alliance with the Prince-Bishop of Minden and Count of Schaumburg and set up his own army. On 28 May 1388, battle was joined at Winsen an der Aller; it ended in victory for Henry. According to the provisions of the Treaty of Hanover from the year 1373, after the death of Wensceslas, the Principality passed to the House of Welf. In 1389, an inheritance agreement between the Welfs and the Ascanians was concluded, the treaty of 1374 was abolished, and the Principality was secured for the Welfs. ||||||||
| Frederick I | | 1357 | 1373–1400 | 5 June 1400 | Wolfenbüttel | Anna of Saxe-Wittenberg 1386 two children | Children of Magnus II. As the eldest, Frederick inherited Wolfenbüttel alone, while his younger brothers held Luneburg since its recovery in 1388. After Frederick I's childless death in 1400, the remaining brothers exchanged feuds until 1428. |
| Henry (I) the Mild | | 1355 | 1388–1416 | 14 October 1416 | Lüneburg | Sophia of Pomerania 11 November 1388 two children Margaret of Hesse 30 January 1409 one child | Children of Magnus II. As the eldest, Frederick inherited Wolfenbüttel alone, while his younger brothers held Luneburg since its recovery in 1388. After Frederick I's childless death in 1400, the remaining brothers exchanged feuds until 1428. |
| Henry (I) the Mild | | 1355 | 1400-1409 | 14 October 1416 | Wolfenbüttel | Sophia of Pomerania 11 November 1388 two children Margaret of Hesse 30 January 1409 one child | Children of Magnus II. As the eldest, Frederick inherited Wolfenbüttel alone, while his younger brothers held Luneburg since its recovery in 1388. After Frederick I's childless death in 1400, the remaining brothers exchanged feuds until 1428. |
| Bernard I | | between 1358 and 1364 | 1388–1409 1428-1434 | 11 June 1434 | Lüneburg | Margaret of Saxe-Wittenberg 1386 three children | Children of Magnus II. As the eldest, Frederick inherited Wolfenbüttel alone, while his younger brothers held Luneburg since its recovery in 1388. After Frederick I's childless death in 1400, the remaining brothers exchanged feuds until 1428. |
| Bernard I | | between 1358 and 1364 | 1409-1428 | 11 June 1434 | Wolfenbüttel | Margaret of Saxe-Wittenberg 1386 three children | Children of Magnus II. As the eldest, Frederick inherited Wolfenbüttel alone, while his younger brothers held Luneburg since its recovery in 1388. After Frederick I's childless death in 1400, the remaining brothers exchanged feuds until 1428. |
| Regency of Frederick I, Duke of Brunswick-Osterode (1383-1401) | Regency of Frederick I, Duke of Brunswick-Osterode (1383-1401) | Regency of Frederick I, Duke of Brunswick-Osterode (1383-1401) | Regency of Frederick I, Duke of Brunswick-Osterode (1383-1401) | Regency of Frederick I, Duke of Brunswick-Osterode (1383-1401) | Regency of Frederick I, Duke of Brunswick-Osterode (1383-1401) | Regency of Frederick I, Duke of Brunswick-Osterode (1383-1401) | |
| Eric I the Winner | | c.1383 | 1383–1427 | 28 May 1427 | Grubenhagen | Elisabeth of Brunswick-Göttingen six children | |
| Otto (III) the One-Eyed | | 1380 | 1394–1463 | 6 February 1463 | Göttingen | Agnes of Hesse 1408 one child | With no male heirs, after his death Göttingen is absorbed by Calenberg. |
| William (III & I) the Victorious | | 1392 | 1416–1428 | 25 July 1482 | Lüneburg | Cecilia of Brandenburg 30 May/6 June 1423 Berlin two children Matilda of Holstein-Pinneberg 1466 one child | Sons of Henry the Mild, ruled jointly. In 1428 they exchanged, with their uncle Bernard I, Lüneburg for Wolfenbüttel. In 1432 founded the Principality of Calenberg, a split-off from Lüneburg, and left the remaining Wolfenbüttel to his brother Henry IV. After the latter's death William took his lands. In 1463, attached the Principality of Göttingen to Calenberg. In 1473, William also annexed Wolfenbüttel. |
| William (III & I) the Victorious | | 1392 | 1428–1432 | 25 July 1482 | Wolfenbüttel | Cecilia of Brandenburg 30 May/6 June 1423 Berlin two children Matilda of Holstein-Pinneberg 1466 one child | Sons of Henry the Mild, ruled jointly. In 1428 they exchanged, with their uncle Bernard I, Lüneburg for Wolfenbüttel. In 1432 founded the Principality of Calenberg, a split-off from Lüneburg, and left the remaining Wolfenbüttel to his brother Henry IV. After the latter's death William took his lands. In 1463, attached the Principality of Göttingen to Calenberg. In 1473, William also annexed Wolfenbüttel. |
| William (III & I) the Victorious | | 1392 | 1432–1482 | 25 July 1482 | Calenberg (with Göttingen from 1463, and Wolfenbüttel from 1473) | Cecilia of Brandenburg 30 May/6 June 1423 Berlin two children Matilda of Holstein-Pinneberg 1466 one child | Sons of Henry the Mild, ruled jointly. In 1428 they exchanged, with their uncle Bernard I, Lüneburg for Wolfenbüttel. In 1432 founded the Principality of Calenberg, a split-off from Lüneburg, and left the remaining Wolfenbüttel to his brother Henry IV. After the latter's death William took his lands. In 1463, attached the Principality of Göttingen to Calenberg. In 1473, William also annexed Wolfenbüttel. |
| Henry (II) the Peaceful | | 1411 | 1416–1428 | 7 December 1473 | Lüneburg | Helena of Clèves 1436 one child | Sons of Henry the Mild, ruled jointly. In 1428 they exchanged, with their uncle Bernard I, Lüneburg for Wolfenbüttel. In 1432 founded the Principality of Calenberg, a split-off from Lüneburg, and left the remaining Wolfenbüttel to his brother Henry IV. After the latter's death William took his lands. In 1463, attached the Principality of Göttingen to Calenberg. In 1473, William also annexed Wolfenbüttel. |
| Henry (II) the Peaceful | | 1411 | 1428-1473 | 7 December 1473 | Wolfenbüttel | Helena of Clèves 1436 one child | Sons of Henry the Mild, ruled jointly. In 1428 they exchanged, with their uncle Bernard I, Lüneburg for Wolfenbüttel. In 1432 founded the Principality of Calenberg, a split-off from Lüneburg, and left the remaining Wolfenbüttel to his brother Henry IV. After the latter's death William took his lands. In 1463, attached the Principality of Göttingen to Calenberg. In 1473, William also annexed Wolfenbüttel. |
| Otto II | | 1396 | 1421-1452 | 1452 | Grubenhagen (at Osterode) | Schonetta of Nassau-Weilburg (d.1436) 1414 one child | After his death, Osterode returned to Grubenhagen. |
| Regency of Otto II, Duke of Brunswick-Osterode (1427-1440) | Regency of Otto II, Duke of Brunswick-Osterode (1427-1440) | Regency of Otto II, Duke of Brunswick-Osterode (1427-1440) | Regency of Otto II, Duke of Brunswick-Osterode (1427-1440) | Regency of Otto II, Duke of Brunswick-Osterode (1427-1440) | Regency of Otto II, Duke of Brunswick-Osterode (1427-1440) | Regency of Otto II, Duke of Brunswick-Osterode (1427-1440) | Sons of Eric I, were under regency until 1440, when they divided Grubenhagen. Henry kept Heldenburg Castle, and Albert Herzberg Castle, but kept the joint rule at Osterode am Harz and Einbeck. Ernest didn't participate in the division, and abdicated in 1464, to become a canon in Halberstadt. |
| Henry III | | 1416 | 1427–1464 | 20 December 1464 | Grubenhagen (at Heldenburg from 1440) | Margaret of Żagań before 27 June 1457 two children | Sons of Eric I, were under regency until 1440, when they divided Grubenhagen. Henry kept Heldenburg Castle, and Albert Herzberg Castle, but kept the joint rule at Osterode am Harz and Einbeck. Ernest didn't participate in the division, and abdicated in 1464, to become a canon in Halberstadt. |
| Albert II | | 1 November 1419 | 1427–1485 | 15 August 1485 | Grubenhagen (at Herzberg) | Elisabeth of Waldeck 15 October 1471 two children | Sons of Eric I, were under regency until 1440, when they divided Grubenhagen. Henry kept Heldenburg Castle, and Albert Herzberg Castle, but kept the joint rule at Osterode am Harz and Einbeck. Ernest didn't participate in the division, and abdicated in 1464, to become a canon in Halberstadt. |
| Ernest II | | 1418 | 1427–1466 | 1466 | Grubenhagen | Unmarried | Sons of Eric I, were under regency until 1440, when they divided Grubenhagen. Henry kept Heldenburg Castle, and Albert Herzberg Castle, but kept the joint rule at Osterode am Harz and Einbeck. Ernest didn't participate in the division, and abdicated in 1464, to become a canon in Halberstadt. |
| Otto IV the Lame | | ? | 1434–1446 | 1446 | Lüneburg | Elisabeth of Eberstein 1425 one child | Ruled jointly. Their rule was marked by major building work to Celle Castle and also by numerous reforms which improved the legal situation of farmers vis-a-vis their local lords. Frederick abdicated to his sons and went to a monastery, but after the death of his son Otto, he left the monastery and resumed his rule. |
| Frederick II the Pious | | 1418 | 1434–1457 1471-1478 | 19 March 1478 | Lüneburg | Magdalene of Brandenburg 3 July 1429 Tangermünde three children | Ruled jointly. Their rule was marked by major building work to Celle Castle and also by numerous reforms which improved the legal situation of farmers vis-a-vis their local lords. Frederick abdicated to his sons and went to a monastery, but after the death of his son Otto, he left the monastery and resumed his rule. |
| Otto V the Magnanimous | | 1439 | 1457–1471 | 9 January 1471 | Lüneburg | Anne of Nassau-Siegen 25 September 1467 Celle two children | Children of Frederick II, ruled jointly. Bernard was also Prince-Bishop of Hildesheim. |
| Bernard II | | 1437 | 1457–1464 | 1464 | Lüneburg | Matilda of Holstein-Pinneberg 1463 no children | Children of Frederick II, ruled jointly. Bernard was also Prince-Bishop of Hildesheim. |
| Regency of Albert II, Duke of Brunswick-Grubenhagen (1464-1479) | Regency of Albert II, Duke of Brunswick-Grubenhagen (1464-1479) | Regency of Albert II, Duke of Brunswick-Grubenhagen (1464-1479) | Regency of Albert II, Duke of Brunswick-Grubenhagen (1464-1479) | Regency of Albert II, Duke of Brunswick-Grubenhagen (1464-1479) | Regency of Albert II, Duke of Brunswick-Grubenhagen (1464-1479) | Regency of Albert II, Duke of Brunswick-Grubenhagen (1464-1479) | With his uncle Albert, officialized the division of Grubenhagen. However, his death without descendants allowed his cousins (sons of Albert) to reunite Grubenhagen. |
| Henry IV | | 1460 | 1464–1526 | 6 December 1526 | Grubenhagen (at Heldenburg) | Elisabeth of Saxe-Lauenburg 26 August 1494 Einbeck no children | With his uncle Albert, officialized the division of Grubenhagen. However, his death without descendants allowed his cousins (sons of Albert) to reunite Grubenhagen. |
| Regency of Anne of Nassau-Siegen (1478-1486) | Regency of Anne of Nassau-Siegen (1478-1486) | Regency of Anne of Nassau-Siegen (1478-1486) | Regency of Anne of Nassau-Siegen (1478-1486) | Regency of Anne of Nassau-Siegen (1478-1486) | Regency of Anne of Nassau-Siegen (1478-1486) | Regency of Anne of Nassau-Siegen (1478-1486) | Son of Otto V. As he opposed to the newly elected Emperor Charles V, the latter deposed him from the duchy and gave it to his sons. |
| Henry (III) the Middle | | 15 September 1468 | 1478–1520 | 19 February 1532 | Lüneburg | Margaret of Saxony 27 February 1487 Celle seven children Anna von Camp c.1528? no children | Son of Otto V. As he opposed to the newly elected Emperor Charles V, the latter deposed him from the duchy and gave it to his sons. |
| Frederick III the Turbulent | | 1424 | 1482–1485 | 7 July 1503 | Calenberg | Anna of Brunswick-Grubenhagen-Einbeck After 1460 no children Margaret of Rietberg 10 May 1483 no children | Imprisoned by his brother William, who took his place. |
| William (IV & II) the Younger | | 1425 | 1482–1485 | 7 July 1503 | Wolfenbüttel | Elizabeth of Stolberg-Wernigerode 1444 three children | Inherited Wolfenbüttel from his father. Joined Calenberg to his domains in 1485, when he imprisoned his brother. Abdicated to his sons in 1491. |
| William (IV & II) the Younger | | 1425 | 1485–1491 | 7 July 1503 | Calenberg (with Wolfenbüttel) | Elizabeth of Stolberg-Wernigerode 1444 three children | Inherited Wolfenbüttel from his father. Joined Calenberg to his domains in 1485, when he imprisoned his brother. Abdicated to his sons in 1491. |
| Philip I | | 1476 | 1485–1551 | 4 September 1551 | Grubenhagen (at Herzberg; from 1526 all Grubenhagen) | Unknown before 1509 one child Catherine of Mansfeld-Vorderort c.1510? nine children | Son of Albert V, in 1526 reunited Grubenhagen under his hands. |
| Eric I the Elder | | 16 February 1470 | 1491-1540 | 30 July 1540 | Calenberg | Katharina of Saxony 1496/97 no children Elisabeth of Brandenburg 7 July 1525 Stettin four children | Sons of William V, ruled jointly. In 1494, they divided their lands. Henry retained Wolfenbüttel and Eric retained Calenberg. |
| Henry (IV) the Elder | | 14 June 1463 | 1491–1494 | 23 June 1514 | Calenberg | Catherine of Pomerania-Wolgast 1486 nine children | Sons of William V, ruled jointly. In 1494, they divided their lands. Henry retained Wolfenbüttel and Eric retained Calenberg. |
| Henry (IV) the Elder | | 14 June 1463 | 1494–1514 | 23 June 1514 | Wolfenbüttel | Catherine of Pomerania-Wolgast 1486 nine children | Sons of William V, ruled jointly. In 1494, they divided their lands. Henry retained Wolfenbüttel and Eric retained Calenberg. |
| Henry (V) the Younger | | 10 November 1489 | 1514–1568 | 11 June 1568 | Wolfenbüttel | Maria of Württemberg 1515 eight children Sophia of Poland 22/25 February 1556 no children | He was the last Catholic of his family. Under him the medieval fortress (Burg) was rebuilt into a castle (Schloss); he was a passionate opponent of the Lutherans, and driving force behind the Catholic alliance established against the Schmalkaldic League; the disinheritance of a third son could not be carried out. |
| Otto (VI & I) | | 24 August 1495 | 1520–1549 | 11 August 1549 | Lüneburg (from 1527 in Harburg) | Meta von Camp 1527 no children | Sons of Henry VII, ruled jointly. Otto abdicated in 1527 and founded his own estate, the Lordship of Harburg, which passed to his own descendants. Ernest was a champion of the Protestant cause during the early years of the Protestant Reformation. Francis started his co-rulership in 1536, and abdicated three years later to rule in his own estate, the Principality of Gifhorn, which was reannexed to Lüneburg after his death as he left no descendants. |
| Ernest I the Confessor | | 27 June 1497 | 1520–1546 | 11 January 1546 | Lüneburg | Sophia of Mecklenburg-Schwerin 2 June 1528 Schwerin seven children | Sons of Henry VII, ruled jointly. Otto abdicated in 1527 and founded his own estate, the Lordship of Harburg, which passed to his own descendants. Ernest was a champion of the Protestant cause during the early years of the Protestant Reformation. Francis started his co-rulership in 1536, and abdicated three years later to rule in his own estate, the Principality of Gifhorn, which was reannexed to Lüneburg after his death as he left no descendants. |
| Francis | | 23 November 1508 | 1536–1539 | 23 November 1549 | Lüneburg | Clara of Saxe-Lauenburg 29 September 1547 Amt Neuhaus seven children | Sons of Henry VII, ruled jointly. Otto abdicated in 1527 and founded his own estate, the Lordship of Harburg, which passed to his own descendants. Ernest was a champion of the Protestant cause during the early years of the Protestant Reformation. Francis started his co-rulership in 1536, and abdicated three years later to rule in his own estate, the Principality of Gifhorn, which was reannexed to Lüneburg after his death as he left no descendants. |
| Regencies of Elisabeth of Brandenburg and Philip I, Landgrave of Hesse (1540-1545) | Regencies of Elisabeth of Brandenburg and Philip I, Landgrave of Hesse (1540-1545) | Regencies of Elisabeth of Brandenburg and Philip I, Landgrave of Hesse (1540-1545) | Regencies of Elisabeth of Brandenburg and Philip I, Landgrave of Hesse (1540-1545) | Regencies of Elisabeth of Brandenburg and Philip I, Landgrave of Hesse (1540-1545) | Regencies of Elisabeth of Brandenburg and Philip I, Landgrave of Hesse (1540-1545) | Regencies of Elisabeth of Brandenburg and Philip I, Landgrave of Hesse (1540-1545) | During his regency, his mother implemented the Reformation in Calenberg. She also wrote a "government manual" for Eric, with important advice that should serve him as a guide. Left no descendants, and Calenberg was annexed to Wolfenbüttel. |
| Eric II | | 10 August 1528 | 1540–1584 | 17 November 1584 | Calenberg | Sidonie of Saxony 17 May 1545 Hann. Münden no children Dorothea of Lorraine 26 November 1575 Nancy no children | During his regency, his mother implemented the Reformation in Calenberg. She also wrote a "government manual" for Eric, with important advice that should serve him as a guide. Left no descendants, and Calenberg was annexed to Wolfenbüttel. |
| Council of Regency (1546–1555) | Council of Regency (1546–1555) | Council of Regency (1546–1555) | Council of Regency (1546–1555) | Council of Regency (1546–1555) | Council of Regency (1546–1555) | Council of Regency (1546–1555) | Left no descendants. The land passed to his brothers. |
| Francis Otto | | 20 June 1530 | 1546–1559 | 29 April 1559 | Lüneburg | Elizabeth Magdalene of Brandenburg 1559 no children | Left no descendants. The land passed to his brothers. |
| Otto II | | 25 September 1528 | 1549-1603 | 26 October 1603 | Lüneburg (in Harburg) | Margaret of Schwarzburg-Leutenberg 8 September 1551 four children Hedwig of East Frisia 8 October 1562 twelve children | |
| Ernest III | | 17 December 1518 | 1551–1567 | 2 April 1567 | Grubenhagen | Margaret of Pomerania-Wolgast 9 October 1547 Wolgast one child | Left no male descendants. The land passed to his brother Wolfgang. |
| Henry (VI) | | 1533 | 1559–1598 | 19 January 1598 | Lüneburg (from 1569 in Dannenberg) | Ursula of Saxe-Lauenburg 1569 seven children | Brothers of Francis Otto, ruled jointly. In 1569 Henry founded the duchy of Dannenberg, which left to his own descendants. William ruled alone from 1569. |
| William V the Younger | | 4 July 1535 | 1559–1592 | 20 August 1592 | Lüneburg | Dorothea of Denmark 12 October 1561 fifteen children | Brothers of Francis Otto, ruled jointly. In 1569 Henry founded the duchy of Dannenberg, which left to his own descendants. William ruled alone from 1569. |
| Wolfgang | | 6 April 1531 | 1567–1595 | 14 May 1595 | Grubenhagen | Dorothea of Saxe-Lauenburg 10 December 1570 Osterode am Harz no children | Like most of his predecessors, he had financial problems, so he was often forced to sell or pledge major parts of his possession and he had to demand high taxes. As he left no male descendants, the land passed to his brother Philip. |
| Julius | | 29 June 1528 | 1568–1589 | 3 May 1589 | Wolfenbüttel | Hedwig of Brandenburg 25 February 1560 Cölln eleven children | In 1584 absorbes the Principality of Calenberg. By embracing the Protestant Reformation, establishing the University of Helmstedt, and introducing a series of administrative reforms, Julius was one of the most important Brunswick dukes in the early modern era. |
| Ernest II | | 31 December 1564 | 1592–1611 | 2 March 1611 | Lüneburg | Unmarried | Left no descendants. The land passed to his brother, Christian. |
| Henry Julius | | 15 October 1564 | 1589–1613 | 30 July 1613 | Wolfenbüttel | Dorothea of Saxony 26 September 1585 Wolfenbüttel one child Elizabeth of Denmark 19 April 1590 Cölln ten children | In 1596 occupied Grubenhagen. |
| Philip II | | 2 May 1533 | 1595–1596 | 4 April 1596 | Grubenhagen | Clara of Brunswick-Wolfenbüttel 1 July 1560 Wolfenbüttel no children | As he left no male descendants, the land had no heir and was occupied by the Principality of Wolfenbüttel. |
| Grubenhagen annexed to Wolfenbüttel, and then definitely to Lüneburg ||||||||
| Julius Ernest | | 11 March 1571 | 1598-1636 | 26 October 1636 | Lüneburg (at Dannenberg) | Maria of East Frisia 1 September 1614 two children Sybille of Brunswick-Lüneburg 1616 two children | Left no descendants. The short-lived Dannenberg principality reverted to Lüneburg. |
| William Augustus | | 15 March 1564 | 1603-1642 | 30 March 1642 | Lüneburg (in Harburg) | Unmarried | Sons of Otto II, ruled together in Harburg. After William Augustus' death, the lordship reunited with Lüneburg. |
| Otto III | | 20 March 1572 | 1603-1641 | 4 August 1641 | Lüneburg (in Harburg) | Hedwig of Brunswick-Wolfenbüttel 14 April 1621 Wolfenbüttel no children | Sons of Otto II, ruled together in Harburg. After William Augustus' death, the lordship reunited with Lüneburg. |
| Christopher | | 21 August 1570 | 1603-1606 | 7 July 1606 | Lüneburg (in Harburg) | Elisabeth of Brunswick-Wolfenbüttel 28 October 1604 Harburg no children | Sons of Otto II, ruled together in Harburg. After William Augustus' death, the lordship reunited with Lüneburg. |
| Regency of Elizabeth of Denmark (1616-1622) | Regency of Elizabeth of Denmark (1616-1622) | Regency of Elizabeth of Denmark (1616-1622) | Regency of Elizabeth of Denmark (1616-1622) | Regency of Elizabeth of Denmark (1616-1622) | Regency of Elizabeth of Denmark (1616-1622) | Regency of Elizabeth of Denmark (1616-1622) | Children of Henry Julius. Frederick Ulirch inheriteed the major duchy, and Sophie Hedwig a seat at Spiegelberg. Because of his alcoholism, Frederick Ulrich was deposed by his own mother, with the help of her brother, Christian IV of Denmark. She took the regency in his name. During her regency, Elizabeth lost in 1617 the Principality of Grubenhagen and left the government business for Anton von Streithorst, who nearly ruined the state by minting coins from cheap metals and thus causing inflation. Because of the bad situation of the state, the king of Denmark had Frederick take control of the government again. Frederick didn't leave descendants, and his lands passed to collateral lines of the Lüneburg Welfs. |
| Frederick Ulrich | | 5 April 1591 | 1613–1634 | 11 August 1634 | Wolfenbüttel | Anna Sophia of Brandenburg 4 September 1614 Wolfenbüttel no children | Children of Henry Julius. Frederick Ulirch inheriteed the major duchy, and Sophie Hedwig a seat at Spiegelberg. Because of his alcoholism, Frederick Ulrich was deposed by his own mother, with the help of her brother, Christian IV of Denmark. She took the regency in his name. During her regency, Elizabeth lost in 1617 the Principality of Grubenhagen and left the government business for Anton von Streithorst, who nearly ruined the state by minting coins from cheap metals and thus causing inflation. Because of the bad situation of the state, the king of Denmark had Frederick take control of the government again. Frederick didn't leave descendants, and his lands passed to collateral lines of the Lüneburg Welfs. |
| Sophia Hedwig | | 13 June 1592 | 1613–1642 | 13 January 1642 | Wolfenbüttel (at Spiegelberg) | Ernest Casimir I, Count of Nassau-Dietz 8 June 1607 Dillenburg two children | Children of Henry Julius. Frederick Ulirch inheriteed the major duchy, and Sophie Hedwig a seat at Spiegelberg. Because of his alcoholism, Frederick Ulrich was deposed by his own mother, with the help of her brother, Christian IV of Denmark. She took the regency in his name. During her regency, Elizabeth lost in 1617 the Principality of Grubenhagen and left the government business for Anton von Streithorst, who nearly ruined the state by minting coins from cheap metals and thus causing inflation. Because of the bad situation of the state, the king of Denmark had Frederick take control of the government again. Frederick didn't leave descendants, and his lands passed to collateral lines of the Lüneburg Welfs. |
| Christian the Elder | | 9 November 1566 | 1611-1633 | 8 November 1633 | Lüneburg (with Grubenhagen from 1617) | Unmarried | Absorbed Grubenhagen from Wolfenbüttel. As he left no descendants, the land passed to his brother, Augustus. Grubenhagen is definitively annexed to Lüneburg. |
| Augustus the Elder | | 18 November 1568 | 1633–1636 | 1 October 1636 | Lüneburg (and Grubenhagen) | Unmarried | No legitimate issue. The land passed to his brother, Frederick IV. |
| George | | 17 February 1582 | 1634–1641 | 2 April 1641 | Calenberg | Anne Eleonore of Hesse-Darmstadt 14 December 1617 Darmstadt eight children | Younger son of William VI. Inherited Calenberg from his cousin Frederick Ulrich, who had left no descendants. Abdicated to his son in 1641. |
| Augustus the Younger | | 10 April 1579 | 1634–1666 | 17 September 1666 | Wolfenbüttel | Clara Maria of Pomerania-Barth 13 December 1607 Strelitz two children Dorothea of Anhalt-Zerbst 26 October 1623 Zerbst five children Elisabeth Sophie of Mecklenburg 1635 two children | Younger son of Henry (VI). Inherited Wolfenbüttel from his cousin Frederick Ulrich, who had left no descendants. In 1643 he moved into the Residence at Wolfenbüttel, was the founder of a barock theatre and the Bibliotheca Augusta. |
| Frederick IV | | 28 August 1574 | 1636–1648 | 10 December 1648 | Lüneburg | Unmarried | As he left no descendants, the land passed to a nephew, Christian Louis, son of Frederick's brother George. |
| Christian Louis | | 25 February 1622 | 1641–1648 | 15 March 1665 | Calenberg | Sophia Dorothea of Schleswig-Holstein-Sonderburg-Glücksburg 9 October 1653 no children | In 1648 inherited the Principality of Lüneburg from his uncle Frederick IV, he gave Calenberg to his younger brother George William, and instead ruled the larger territory of Lüneburg. |
| Christian Louis | | 25 February 1622 | 1648-1665 | 15 March 1665 | Lüneburg | Sophia Dorothea of Schleswig-Holstein-Sonderburg-Glücksburg 9 October 1653 no children | In 1648 inherited the Principality of Lüneburg from his uncle Frederick IV, he gave Calenberg to his younger brother George William, and instead ruled the larger territory of Lüneburg. |
| George William | | 26 January 1624 | 1648–1665 | 28 August 1705 | Calenberg | Éléonore Desmier d'Olbreuse 1676 one child | When his brother, Christian Louis died childless in 1665, George William inherited Luneburg. He then gave Calenberg to his next brother, John Frederick. At his death without male descendants, the land passed to his son-in-law, the Elector of Hanover. Lüneburg is annexed to Hanover. |
| George William | | 26 January 1624 | 1665-1705 | 28 August 1705 | Lüneburg | Éléonore Desmier d'Olbreuse 1676 one child | When his brother, Christian Louis died childless in 1665, George William inherited Luneburg. He then gave Calenberg to his next brother, John Frederick. At his death without male descendants, the land passed to his son-in-law, the Elector of Hanover. Lüneburg is annexed to Hanover. |
| Lüneburg definitely annexed to Hanôver ||||||||
| Rudolf Augustus | | 16 May 1627 | 1666–1704 | 26 January 1704 | Wolfenbüttel | Christiane Elizabeth of Barby-Mühlingen 1650 three children Rosine Elisabeth Menthe 1681 (morganatic) no children | Sons of Augustus II, the eldest two ruled jointly from 1685 to 1702. The youngest, Ferdinand Albert, ruled from the town of Bevern. According to reports dating to 1677, Rudolf Augustus slashed a way through the Lechlum Forest, the Alten Weg ("Old Way"), later the "Barock Road" between the Lustschloss of Antoinettenruh via the little barock castle [later the Sternhaus] to the Großes Weghaus at Stöckheim; in 1671 captured the town and fortress of Brunswick. After the death of Rudolf Augustus, Anthony Ulrich returned to the throne and ruled alone. A politician, art lover and poet, he founded a museum named after him in Brunswick; he had also Salzdahlum Castle built. |
| Anthony Ulrich | | 4 October 1633 | 1685-1702 1704–1714 | 27 March 1714 | Wolfenbüttel | Elizabeth Juliana of Schleswig-Holstein-Sønderburg-Nordborg 17 August 1656 thirteen children | Sons of Augustus II, the eldest two ruled jointly from 1685 to 1702. The youngest, Ferdinand Albert, ruled from the town of Bevern. According to reports dating to 1677, Rudolf Augustus slashed a way through the Lechlum Forest, the Alten Weg ("Old Way"), later the "Barock Road" between the Lustschloss of Antoinettenruh via the little barock castle [later the Sternhaus] to the Großes Weghaus at Stöckheim; in 1671 captured the town and fortress of Brunswick. After the death of Rudolf Augustus, Anthony Ulrich returned to the throne and ruled alone. A politician, art lover and poet, he founded a museum named after him in Brunswick; he had also Salzdahlum Castle built. |
| Ferdinand Albert I | | 22 May 1636 | 1666-1687 | 23 April 1687 | Wolfenbüttel (at Bevern) | Christine of Hesse-Eschwege 25 November 1667 Eschwege six children | Sons of Augustus II, the eldest two ruled jointly from 1685 to 1702. The youngest, Ferdinand Albert, ruled from the town of Bevern. According to reports dating to 1677, Rudolf Augustus slashed a way through the Lechlum Forest, the Alten Weg ("Old Way"), later the "Barock Road" between the Lustschloss of Antoinettenruh via the little barock castle [later the Sternhaus] to the Großes Weghaus at Stöckheim; in 1671 captured the town and fortress of Brunswick. After the death of Rudolf Augustus, Anthony Ulrich returned to the throne and ruled alone. A politician, art lover and poet, he founded a museum named after him in Brunswick; he had also Salzdahlum Castle built. |
| John Frederick | | 25 April 1625 | 1665–1679 | 18 December 1679 | Calenberg | Benedicta Henrietta of the Palatinate 30 November 1668 Hanover three children | Brother of Christian Louis and George William. As he left no male heirs, the land passed to his younger brother, Ernest Augustus. |
| Ernest Augustus I | | 20 November 1629 | 1679–1692 | 23 January 1698 | Calenberg | Sophia of the Palatinate 30 September 1658 Heidelberg seven children | Youngest son of George. Brother of Christian Louis, George William and John Frederick. In 1692, he was appointed Prince-elector by Leopold I, Holy Roman Emperor, thus raising the House of Welf to electoral dignity. The old Principality of Calenberg thus adopted the new name of Electorate of Hanover. |
| Ernest Augustus I | | 20 November 1629 | 1692-1698 | 23 January 1698 | Electorate of Hanover | Sophia of the Palatinate 30 September 1658 Heidelberg seven children | Youngest son of George. Brother of Christian Louis, George William and John Frederick. In 1692, he was appointed Prince-elector by Leopold I, Holy Roman Emperor, thus raising the House of Welf to electoral dignity. The old Principality of Calenberg thus adopted the new name of Electorate of Hanover. |
| George I Louis | | 28 May 1660 | 1698–1727 | 11 June 1727 | Electorate of Hanover | Sophia Dorothea of Brunswick-Lüneburg 22 November 1682 Celle (annulled 1694) two children | The electorship became effective under his rule. In 1705 reunited his father-in-law's princedom of Lüneburg to the Electorate. In 1714 was chosen for King of Great Britain, starting a personal union between Hanover and this new country. Lüneburg was definitely annexed to the Electorate. Thus the Wolfenbüttel was the remaining old land of Brunswick-Lüneburg that remained separate. |
| Augustus William | | 8 March 1662 | 1714–1731 | 23 March 1731 | Wolfenbüttel | Christine Sophie of Brunswick-Wolfenbüttel 1681 no children Sophie Amalie of Holstein-Gottorp 1695 no children Elisabeth Sophie Marie of Schleswig-Holstein-Sonderborg-Norburg 1710 no children | Son of Anthony Ulrich. Ruler of the only land that was still not in Hanoverian lands, to which it would never belong. |
| George II Augustus | | 30 October / 9 November 1683 | 1727–1760 | 25 October 1760 | Electorate of Hanover | Wilhelmina Charlotte Caroline of Brandenburg-Ansbach 22 August / 2 September 1705 Hanover ten children | In personal union with Great Britain. |
| Louis Rudolph | | 22 July 1671 | 1731–1735 | 1 March 1735 | Wolfenbüttel | Christine Louise of Oettingen-Oettingen 22 April 1690 Aurich three children | Left no male heirs, and his land passed to a collateral line. |
| Ferdinand Albert II | | 29 May 1680 | 1687-1735 1735 | 2 September 1735 | Wolfenbüttel (in Bevern) Wolfenbüttel | Antoinette Amalie of Brunswick-Wolfenbüttel 15 October 1712 Brunswick thirteen children | From the line of Brunswick-Bevern. Grandson of Augustus II. |
| Charles I | | 1 August 1713 | 1735–1773 | 26 March 1780 | Wolfenbüttel | Philippine Charlotte of Prussia 2 June 1733 Berlin thirteen children | Founder of the Collegium Carolinum in Brunswick, the porcelain makers of Fürstenberg, the fire office; in 1753 the Residence was moved to Brunswick. |
| George III William Frederick | | 4 June 1738 | 1760-1811 | 29 January 1820 | Electorate of Hanover | Charlotte of Mecklenburg-Strelitz 8 September 1761 London fifteen children | In personal union with Great Britain. |
| Charles II William Ferdinand | | 9 October 1735 | 1773–1806 | 10 November 1806 | Wolfenbüttel | Augusta of Great Britain 16 January 1764 London seven children | Due to financial problems, was obliged to replace his father. He was the head of the Prussian Army; died in the Battle of Jena; because his son and heir died young, and two other sons were not eligible, rule passed to his youngest son. |
| With the dissolution of the Holy Roman Empire in 1806, the title of Duke of Brunswick-Lüneburg ceased to exist. However, its successor states continued. ||||||||
| Frederick William the Black Duke | | 9 October 1771 | 1806–1807 1813–1815 | 16 June 1815 | Wolfenbüttel (1813-15) Brunswick (1806-07) | Marie Elisabeth Wilhelmine of Baden 1 November 1802 Karlsruhe three children | Duke of Oels/Silesia, the "Black Duke"; recruited a Freikorps (volunteer corps), the Black Brunswickers, at the outbreak of the War of the Fifth Coalition in Bohemia in 1809, and made his way via Brunswick to the North Sea and then on to Great Britain. |
| On the Eve of Napoleonic era, in 1807 the Duchy was briefly annexed to the Kingdom of France, to appear again in 1813 as Duchy of Brunswick. ||||||||
| George IV Augustus Frederick | | 12 August 1762 | 1811–1830 | 26 June 1830 | Electorate of Hanover (until 1814) Kingdom of Hanover (from 1814) | Caroline Amelia Elizabeth of Brunswick-Wolfenbüttel 8 April 1795 London one child | In personal union with the United Kingdom. Named regent of his father due to his illness, succeeding him after his death in 1820. Left no male descendants. The land passed to his brother. |
| Regency of George IV of the United Kingdom (1815-1823) | Regency of George IV of the United Kingdom (1815-1823) | Regency of George IV of the United Kingdom (1815-1823) | Regency of George IV of the United Kingdom (1815-1823) | Regency of George IV of the United Kingdom (1815-1823) | Regency of George IV of the United Kingdom (1815-1823) | Regency of George IV of the United Kingdom (1815-1823) | On the eve of the July Revolution of 1830, Charles was in Paris, and did not manage to keep the duchy for himself; his brother William took over with the agreement of the people and his international neighbours. |
| Charles II | | 30 October 1804 | 1815–1830 | 18 August 1873 | Brunswick | Unmarried | On the eve of the July Revolution of 1830, Charles was in Paris, and did not manage to keep the duchy for himself; his brother William took over with the agreement of the people and his international neighbours. |
| William Henry | | 21 August 1765 | 1830–1837 | 20 June 1837 | Kingdom of Hanover | Adelaide of Saxe-Meiningen 13 July 1818 London four children | In personal union with the United Kingdom. Usually numbered IV as King of Hanover and the United Kingdom. As he left only illegitimate descendants, the land passed to his brother. |
| William | | 25 April 1806 | 1830–1884 | 18 October 1884 | Brunswick | Unmarried | Brother of Charles II. |
| Ernest Augustus | | 5 June 1771 | 1837–1851 | 18 November 1851 | Kingdom of Hanover | Frederica of Mecklenburg-Strelitz 29 May 1815 Neustrelitz three children | End of personal union with the United Kingdom, as in this country the successor in 1837 was Queen Victoria (in Hanover the Salic Law was still active). |
| George V Frederick | | 27 May 1819 | 1851–1866 | 12 June 1878 | Kingdom of Hanover | Marie of Saxe-Altenburg (I) 18 February 1843 Hanover three children | He was the last king of Hanover, as his reign ended with the Unification of Germany. |
| Hanôver annexed to the German Empire ||||||||
| Regencies of Prince Albert of Prussia (1885-1906) and Duke John Albert of Mecklenburg-Schwerin (1906-1913) | Regencies of Prince Albert of Prussia (1885-1906) and Duke John Albert of Mecklenburg-Schwerin (1906-1913) | Regencies of Prince Albert of Prussia (1885-1906) and Duke John Albert of Mecklenburg-Schwerin (1906-1913) | Regencies of Prince Albert of Prussia (1885-1906) and Duke John Albert of Mecklenburg-Schwerin (1906-1913) | Regencies of Prince Albert of Prussia (1885-1906) and Duke John Albert of Mecklenburg-Schwerin (1906-1913) | Regencies of Prince Albert of Prussia (1885-1906) and Duke John Albert of Mecklenburg-Schwerin (1906-1913) | Regencies of Prince Albert of Prussia (1885-1906) and Duke John Albert of Mecklenburg-Schwerin (1906-1913) | His regency came to an end on 1 November 1913 when Ernest Augustus, Crown Prince of Hanover's son, was permitted to ascend to Duchy following his marriage to Princess Victoria Louise of Prussia. In 1918, with the abolition of the monarchy, all nobles titles were equally abolished. |
| Ernest Augustus | | 17 November 1887 | 1913–1918 | 30 January 1953 | Brunswick | Victoria Louise of Prussia 24 May 1913 Berlin five children | His regency came to an end on 1 November 1913 when Ernest Augustus, Crown Prince of Hanover's son, was permitted to ascend to Duchy following his marriage to Princess Victoria Louise of Prussia. In 1918, with the abolition of the monarchy, all nobles titles were equally abolished. |