Guillaume  I de Belleme
Guillaume  I was born in 0963 in Normandy, France.  He died at the age of 65 in 1028.

 Mathilda de Ganelon
Mathilda was born in 0970 in Ganelon, France.  Mathilda is no longer alive.

 Guillaume  II Talvas  de Alecon
Guillaume  II Talvas  was born in 0995 in Belleme, Perche, France.  He died at the age of 53 in 1048.