Question: What year was The Holy Emperor of Romes courtier promoted to head of the bodyguard?

full_context: Document 1: Conrad II of Italy: Conrad II (12 February 1074 – 27 July 1101) was the Duke of Lower Lorraine (1076–87), King of Germany (1087–98) and King of Italy (1093–98). He was the second son of Holy Roman Emperor Henry IV and Bertha of Savoy, and their eldest son to reach adulthood, his older brother Henry having been born and died in the same month of August 1071. Conrad's rule in Lorraine and Germany was nominal. He spent most of his life in Italy and there he was king in fact as well as in name.
Document 2: Duke of Lodi: The title of Conte di Magenta was created on 30 December 1619 for Don Luigi Melzi, of a Milanese patrician family. His descendant Gaspare, eighth Count, married Maria Teresa d'Eril, daughter and heiress of the Marchese de Fuente Sagrada, and their descendants adopted the name Melzi d'Eril. Francesco Melzi d'Eril, ninth Count, was made Vice-President of the Italian Republic under Napoleon Bonaparte in 1802, and Grand Chancellor of the Napoleonic Kingdom of Italy in 1805. On 20 December 1807 he was created Duca di Lodi by Napoleon in his capacity as King of Italy. The Duke was childless, and adopted as his heir his nephew Giovanni Francesco. On his death he was succeeded as tenth Count by his brother Luigi. The Emperor of Austria, as King of Lombardy-Venetia after the Congress of Vienna, recognised the comital title of Magenta in 1816, but did not recognise the Napoleonic dukedom of Lodi. However, Giovanni was given the title of Duca Melzi on 5 September 1818. His son Lodovico, twelfth Count of Magenta, reassumed the title of Duca di Lodi in 1859. The titles of Duca di Lodi and Conte di Magenta were recognised for his successors by ministerial decrees of the new Kingdom of united Italy dated 1890, 1913 and 1939. While there are still heirs to these titles, they were suppressed in 1947 along with all other italian noble titles.
Document 3: Milo of Verona: Milo (Italian: "Milone" ) was the Count (later Margrave) of Verona from 931 until 955. He was a vassal of four successive kings of Italy from 910. Under Berengar I he became a courtier ("familiaris") and by 924 head of the bodyguard. By 927 he had expanded his landholdings to have vassals of his own. Under Hugh, he revolted twice but kept his position in Verona. Under Berengar II, he was raised to the rank of margrave ("marchio") in 953.
Document 4: Berengar I of Italy: Berengar I (Latin: "Berengarius, Perngarius" ; Italian: "Berengario" ; 845 – 7 April 924) was the King of Italy from 887, and Holy Roman Emperor after 915, until his death. He is usually known as Berengar of Friuli, since he ruled the March of Friuli from 874 until at least 890, but he had lost control of the region by 896.
Document 5: House of Visconti: Visconti is the family name of two important Italian noble dynasties of the Middle Ages. There are two distinct Visconti families: the first one (chronologically) in the Republic of Pisa in the mid twelfth century who achieved prominence first in Pisa, then in Sardinia, where they became rulers of Gallura. The second family rose to power in Milan, where they ruled from 1277 to 1447, and where several collateral branches still exist. Pope Gregory X, who reigned from 1271 to 1276, was a member of the Visconti family of Milan. The renowned film director Luchino Visconti was a scion of this latter family's Visconti of Modrone branch.
Document 6: Duke of Aosta: In the mid-13th century the Hohenstaufen Holy Roman Emperor Frederick II made the County of Aosta a duchy; its arms were carried in the Savoyard coat of arms until the unification of Italy in 1870. The region remained part of Savoy lands, with the exception of a French occupation, 1539—1563. The title Duke of Aosta was given to various princes of the dynasty of Sardinia, second sons of the reigning monarch. It can be compared to the English Duke of York, French Duke of Orléans, Swedish Duke of Södermanland and the Scottish Duke of Albany. It remained in the branch of Prince Amedeo of Savoia, the second son of king Victor Emanuel II of Italy, as he was the first ever cadet prince Duke of Aosta who left male heirs. The subsidiary titles of the Duke of Aosta are, from the heritage of Maria Vittoria dal Pozzo, the mother of Duke Emanuele Filiberto, Prince della Cisterna and of Belriguardo, Marquess of Voghera, and Count of Ponderano. Ponderano was created in 1559, Voghera in 1618; Cisterna and Belriguardo as princely in 1670. The title has been used since July 2006 by Amedeo's son Prince Aimone, Duke of Apulia (born 1967), who is married to Princess Olga of Greece, younger daughter of Prince Michael of Greece and Denmark.
Document 7: Verziere: The Verziere (old-fashioned Italian word for "greengrocery market"; also known as Verzee, in Milanese) was the traditional greengrocery street market of Milan, Italy. The market itself has been relocated several times, and it is now in Via Lombroso, east of the city centre; the word "Verziere", anyway, still refers to the main historic location of the market, where it was held from 1776 century until 1911. The new greengrocery market of Via Lombroso is more properly referred to as "Ortomercato" (another Italian word with the same meaning) or "Mercati Generali" ("general markets").
Document 8: House of Savoy: The House of Savoy (Italian: "Casa Savoia" ), is a royal family that was established in 1003 in the historical Savoy region. Through gradual expansion, the family grew in power from ruling a small county in the Alps of northern Italy to absolute rule of the kingdom of Sicily in 1713. Through its junior branch, the House of Savoy-Carignano, it led the unification of Italy in 1861 and ruled the Kingdom of Italy from 1861 until 1946 and, briefly, the Kingdom of Spain in the 19th century. The Savoyard kings of Italy were Victor Emmanuel II, Umberto I, Victor Emmanuel III, and Umberto II. The last monarch ruled for a few weeks before being deposed following the Constitutional Referendum of 1946, after which the Italian Republic was proclaimed.
Document 9: Fortress of Miolans: The Fortress of Miolans (French: "Château de Miolans" ) is a former fortress prison located in a remote area of Savoy between Italy and France. The site, which has been occupied since the fourth century AD, strategically controlled the route across the junction of the Isere and Arc rivers. The fortress was converted into a prison by the Counts of Savoy in the mid-16th century. Its notoriety led it to be compared to the Bastille in Paris.
Document 10: Bertha of Swabia: Bertha of Swabia (French: "Berthe de Souabe" ; German: "Berta von Schwaben" ;  907 AD – after January 2, 966), a member of the Alemannic Hunfriding dynasty, was Queen consort of Upper Burgundy from 922 until 937 and Queen consort of Italy from 922 until 926, by her marriage with King Rudolph II. She again became Italian queen by her second marriage with King Hugh in 937 and ceased to be consort upon her husband's death in 948.
Document 11: Conrad II, Holy Roman Emperor: Conrad II (c. 990 4 June 1039), also known as Conrad the Elder and Conrad the Salic , was Emperor of the Holy Roman Empire from 1027 until his death in 1039. The founder of the Salian dynasty of emperors, Conrad also served as King of Germany from 1024, King of Italy from 1026, and King of Burgundy from 1033.
Document 12: List of marquesses in Italy: Italy, as a single nation state, began only in 1861, after the Piedmont-based Kingdom of Sardinia conquered most of present-day Italy. At that point, titles were recognized to all who held them according to the law of so-called "pre-unitarian" States. Consequently, the Kingdom of Italy had several different nobility traditions, one for each pre-unitarian State and one for the unified state (that was actually the Piedmontese-Savoyard one). That is why the Italian College of Arms, called "Consulta araldica" (heraldic council), was organized in 14 "regional" commissions. Common rules concerning all titles were established only in 1926. That is why a list of Italian marquisates has to be divided into different pre-unitarian lists, plus a unified list for titles granted after 1861. The latter should be completed with titles granted by the last King of Italy, Humbert II, during his exile and after the proclamation of the republic (1946), until his death in 1983: these concessions base upon the fact that he was not defeated in war and thus remained a king, that is a "fons honorum", but this issue is controversial, titles granted by a non-reigning king not being recognized by most noble and royal families in Europe. Only the Sovereign Military Order of Malta and the Corpo della Nobiltà Italiana recognize these titles, while the CILANE treats them as mere titles of courtesy.
Document 13: Carloman I: Carloman I, also "Karlmann" (28 June 751 – 4 December 771) was king of the Franks from 768 until his death in 771. He was the second surviving son of Pepin the Short and Bertrada of Laon and was a younger brother of Charlemagne. No one knows who killed him. Carloman is mainly regarded by historians as Charlemagne's first steps towards acquiring the Holy Roman Empire, as his death allowed Charlemagne to take all of Francia and begin his expansion into other kingdoms.
Document 14: Otto II, Holy Roman Emperor: Otto II (955 – December 7, 983), called the Red ("Rufus"), was Holy Roman Emperor from 973 until his death in 983. A member of the Ottonian dynasty, Otto II was the youngest and sole surviving son of Otto the Great and Adelaide of Italy.
Document 15: Carloman of Bavaria: Carloman (German: "Karlmann" , Latin: "Karlomannus" ; c. 830 – 22 March 880), was a Frankish king of the Carolingian dynasty. He was the eldest son of Louis the German, king of East Francia, and Hemma, daughter of a Bavarian count. His father appointed him margrave of Pannonia in 856, and upon his father's death in 876 he became King of Bavaria. He was appointed by King Louis II of Italy as his successor, but the Kingdom of Italy was taken by his uncle Charles the Bald in 875. Carloman only conquered it in 877. In 879 he was incapacitated, perhaps by a stroke, and abdicated Bavaria to Louis the Younger and Italy to Charles the Fat.
ground_truth: 924