Dietrich I Count of West Friesland
Dietrich I Count of West was born about 0900 in Noordwijk-Binnen, Zuid, Holland.  He died on October 6th, 0939.

 Gerberge (Geva) of Mayinhard
Gerberge (Geva) of was born about 0903 in Egmond-Binnen, Netherlands.  Gerberge (Geva) of is no longer alive.

 Dietrich II Count of West Friesland
Dietrich II Count of West was born in 0938 in Egmond-Binnen, Netherlands.  He died at the age of 50 on May 6th, 0988.