Father: Count Theoderich II of Westfriesland Born: 928 Married: Unknown Died: May 6, 988
Mother: Princess Hildegard of Flanders Born: 934 Died: April 10, 990
Children: 1. Count Arnulf of Westfriesland (b.951) 2. Archbishop Egbert of Trier (b.953) 3. Princess Herlinde of Westfriesland (b.956)