I Dietrich
I was born about 0900 in Noordwijk-Binnen, Zuid, Holland, Netherlands.  I is no longer alive.

 Countess of Holland Geva
Countess of Holland was born about 0903 in Egmond-Binnen, Noord Holland, Netherlands.  She died in Egmond-Binnen, Noord Holland, Netherlands.

 Wichmann II de Gand
Wichmann II was born about 0920 in Gand, Flanders, Belgium.  He died in 0983.

 Dietrich Dirk II , Count of West Friesland
Dietrich was born about 0938 in Egmond-Binnen, Noord Holland, Netherlands.  He died in Abdijkirk, Egmond-Binnen, Noord Holland, Netherlands.