*Welf IV Duke of Bavaria
born 1037
died 9 November 1101 Cyprus

father:
*Adalbert (Alberto) II d'Azzo Marchese d'Este
died 20 August 1097

mother:
*Kunigunde (Kuniza) of Altdorf
born after 1020
died after 1055
married about 1035

siblings (or nephew):
*Adalbert (Alberto) III d'Azzo d'Este

spouse:
*Judith de Flanders
born about 1014 Flanders

children:
*Heinrich IX Duke of Bavaria born 1074 died 1136
Fulco d'Este

biographical and/or anecdotal:

notes or source:
LDS
ancestry.com