Father: Count Otto II of Diessen-Thanning Born: 1065 Married: Unknown Died: January 11, 1126
Mother: Princess Adelheid of Regensburg Born: 1066 Died: 1119
Children: 1. Bishop Heinrich I of Regensburg (b.1085) 2. Princess Adelheid of Thanning (b.1088) 3. Princess Elisabeth of Thanning (b.1090)
