Father: Count Arnulf of Diessen Born: 1058 Married: Unknown Died: February 8, 1098
Mother: Princess Adelheid of Babenberg Born: 1059 Died: 1103
Children: 1. Count Friedrich IV of Diessen (b.1080) 2. Count Dietrich II of Diessen (b.1082) 3. Princess Adelheid of Diessen (b.1085) 4. Count Gebhard I of Diessen (b.1078) 5. Count Otto of Wasserburg (b.1091)
