Dirk I (Dietrich) de Holland
He died in 0939.

 Geva (Gerberge) of Hamalant
Geva (Gerberge) of was born in 0911.

 Wickmann II de Gand of Ghent & Hamalant
Wickmann II de Gand of Ghent & was born in 0920.  He died at the age of 39 in 0959.

 Dirk II (Dietrich) de Holland
Dirk II (Dietrich) was born in 0935.  Dirk II (Dietrich) is no longer alive.