Gérard Ier Berthold De Mechelen
Gérard Ier Berthold was born in 1070.  He died at the age of 61 in 1131.

 Guda De Guines
Guda was born about 1075.  Guda is no longer alive.

 Walter II Berthold De Mechelen
Walter II Berthold was born about 1095.  He died in 1147.