- Count Dirk was born on 938 in Of, Egmond-Binnen, Noord, Holland, Netherlands and died on 6 MAY 988 in Abdijkerk, Egmond Aan Den Hoef, Noord, Holland, Netherlands
- Count Floris was born on ABT 1017 in Of, Vlaardingen, Zuid, Holland, Netherlands and died on 28 JUN 1061 in (murdered) Near Nederhemert, Gelderland, Netherlands