John Adolf, Duke of Holstein-Gottorp
Johann Adolf of Holstein- Gottorp( 27 February 1575 – 31 March 1616) was a Duke of Holstein- Gottorp.
Ingeborg of Holstein
Ingeborg of Holstein (1396 – 14 October 1465), was Abbess of Vadstena Abbey 1447-1452 and 1457-1465.
She was the daughter of Gerhard VI, Count of Holstein-Rendsburg (d. 1404) and Catherine Elisabeth of Brunswick-Lüneburg.
In 1408, she was placed in the convent by Queen Margaret I of Denmark by special consent of the Pope.
She became a full member of the order in 1415.
Due to her age, it is believed that she initially resided in her own house on the convent premises.
In 1447, she was appointed Abbess.
Her election was controversial and an active opposition remained against her appointment.
She had the loyal support of the confessor of the abbey, Magnus Unnonis.
Ingeborg was the maternal aunt of King Christian I of Denmark, which was likely the cause to why King Charles VIII of Sweden 25 April 1452
demanded that she and the confessor of the abbey, Magnus Unnonis, should be deposed.
Bishop Nils König of Linköping saw no cause for this, but both Ingeborg and Unnonis stepped down in
May. They were reinstated in their positions in 1457.
Ingeborg worked to install the so-called vårfrupenningen to a regular fee, a goal she succeeded with by permission of Charles VIII of Sweden in 1450, and again from Christian I of Denmark in 1461.
In 1462, she received the papal legate Marinus de Fregeno in Vadstena.
Upon the request of Christian I, she wrote the (C 50, UUB), "Fjorton råd om ett gudeligt leverne" (Fourteen Advises to live goodly), likely before his visit in 1461.
Ingeborg is believed to have supported the Roman side against Conciliarism and the new Papal policy of Concords and diplomacy, and opposed the national centralism of Charles VIII of Sweden.
Gerhard VI, Count of Holstein-Rendsburg
Gerhard VI (c. 1367–1404) was the Count of Holstein-Rendsburg from 1382, and Duke of Schleswig as of 1386.
Gerhard VI was born around 1367, the son of Count Henry II from the Rendsburg line of the House of Schauenburg and Ingeborg of Mecklenburg.
After the death, in 1381 or 1384, of his father, who had ruled jointly with Gerhard's uncle Nicholas (Claus), Gerhard and his younger brother Albert II entered into the joint government for their late father.
On 15 September 1386 King Olav III of Denmark enfeoffed him with the Duchy of Schleswig, after his uncle Nicholas had resigned from that function.
In 1390 Gerhard and his brother and uncle inherited Holstein-Kiel, including the merged Plön, whose line had been extinct in 1350.
After their uncle Nicholas had died in 1397 the brothers divided their possessions, the elder keeping Schleswig and Holstein-Rendsburg, and Albert II receiving Holstein-Segeberg as secundogeniture.
In 1403 Gerhard regained Segeberg by way of reversion upon Albert's death in action against Ditmarsh, thus ruling almost the whole of Holstein except of Holstein-Pinneberg.
The Duchy of Schleswig and the County of Holstein-Rendsburg were then under one ruler.
He fell in the Battle on the Hamme on 4 August 1404 during another attempt to subjugate Ditmarsh.
Ingeborg of Sweden (1263–1292)
Ingeborg of Sweden( 1263–1292), was a Swedish Princess and Countess consort of Holstein- Plön by marriage to Gerhard II, Count of Holstein- Plön.
She was the daughter of Valdemar, King of Sweden, and Sophia of Denmark.
Henry I, Count of Holstein-Rendsburg
Henry I, Count of Holstein- Rendsburg( 1258–1304) was the first Count of Holstein- Rendsburg.
Gerhard I, Count of Holstein-Itzehoe
Gerhard I, Count of Holstein- Itzehoe( 1232 – 21 December 1290) was the only count of Holstein- Itzehoe.
Albert II, Count of Holstein-Rendsburg
Albert II of Holstein( – 28 September 1403 in Dithmarschen( Ditmarsh)) was the ruling Count of Holstein- Rendsburg from his father's death, in 1381 or 1384, until 1397.
From 1397 until his death, he was Count of Holstein- Segeberg.
Adolph V, Count of Holstein-Segeberg
Adolph V, Count of Holstein- Segeberg( – 1308) was the ruling count of Holstein- Kiel from 1263 to 1273 and of Holstein- Segeberg from 1273 until his death.
Ingeborg of Mecklenburg-Schwerin
Ingeborg of Mecklenburg( 1343/45 – 25 July 1395) was a daughter of Albert II, Duke of Mecklenburg and his wife, Euphemia of Sweden.
Euphemia was a daughter of Ingeborg of Norway, who was the only legitimate child of King Haakon V of Norway.
Thus, Ingeborg of Mecklenburg was Haakon V's great- granddaughter.
In 1360, she married Louis VI" the Roman" of Bavaria; she was his second wife.
The marriage remained childless.
After Louis's death, she married Henry II, Count of Holstein- Rendsburg.
They had at least four children:
Agnes of Holstein
Agnes of Holstein( died: 1386) was a Countess of Holstein- Kiel by birth and by marriage a Duchess of Saxe- Lauenburg.
She was the daughter of Count John III of Holstein- Plön( d. 1359) and Catherine( d. 1327), daughter of Duke Henry III of Silesia- Glogau.
She died in 1386 and was buried in the Cathedral in Ratzeburg.

Question: What is the date of death of Ingeborg Of Holstein's father?
Answer: 4 August 1404