What year was The Holy Emperor of Romes courtier promoted to head of the bodyguard?
Milo of Verona:  Under Berengar I he became a courtier ("familiaris") and by 924 head of the bodyguard. 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.
924