[1] He was a son of Baldwin II, Count of Flanders, and of Ælfthryth, daughter of Alfred the Great.
[5] Baldwin II's extensive lands and many offices in what is now the north of modern France and the west of Belgium were divided among his sons on his death in 918.
Adelolf was to seek the English king's agreement to a marriage between Hugh and another of Æthelstan's sisters.
[10] Among the lavish gifts sent to Æthelstan, an avid collector of relics, were said to be the sword of the Roman Emperor Constantine the Great and the Holy Lance.
Adelolf received the body of his kinsman with honour and took it to the Abbey of Saint Bertin for burial.