Gérard II Flamens De Wassemberg
Gérard II Flamens was born in 1000.  He died at the age of 53 in 1053.

 Thierry Flamens De Wassemberg
Thierry Flamens was born in 1030.  He died at the age of 52 in 1082.

 Henri De Wassemberg
Henri was born about 1045.  He died in 1082.