In 'Genealogiciæ Scriptoris Fusniacensis[2] he is referred as the brother of: Although he is traditionally considered to have been the son of his predecessor, Giselbert, Count of Roucy and Reims and an unnamed daughter of William III "Towhead", Duke of Aquitaine, no contemporary document mentions a wife or children for Giselbert.
Instead, a novel theory by Jean-Noël Mathieu[5] resolves some inconsistencies by placing Giselbert as his matrilineal great-uncle.
The new study, based on onomastic data, suggests that Ebles I was the son of Ebles de Poitiers (son of William IV, Duke of Aquitaine and Emma of Blois) and an unnamed daughter of Aubry II, Count of Mâcon and Ermentrude of Roucy, Giselbert of Roucy's sister.
Mathieu further notes that the conventional theory does not take into account that: Ebles married Beatrice of Hainaut,[8] the daughter of Reginar IV, Count of Mons and Hedwig of France (daughter of Hugh Capet).
From this union he had: Around 1020, Ebles separated from his wife[5][9] and took holy orders, being therefore elected archbishop of Reims.