His parentage is confirmed by the charter dated 18 Nov 1050 under which Pope Leo IX donated property to Heiligenkreuz Kloster in Woffenheim, near Egisheim, naming "patris mei Hugonis et matris meĉ Heilwigdis, amborumque fratrum meorum Gerardi et Hugonis iam defunctorum" and "nepoti meo Heinrico, castrum Egensheim".