Roger De Mongomerie
Roger was born in 1022.  He died at the age of 72 on July 7th, 1094 in Shrewsbury Abbey, Shropshire, England.

 Mabel De Talvas De Belleme
Mabel De Talvas was born about 1025 in Alencon, France.  She died on December 2nd, 1079 in Chateau de Bures-Sur-Dive, France.

 Robert De Alencon
Robert was born in Montgomershire, Wales.  He died about 1132.