Bertram de Verdun
Bertram was born about 1062 in Farnham Royal, Buckinghamshire, England.

 Maud Ferrers
Maud was born in 1083 in Derbyshire, England.  She died before 1190.

 Norman de Verdun
Norman was born about 1097 in Farnham Royal, Buckinghamshire, England.  He died after 1140.

 Adelicia de Verdun
Adelicia was born about 1108 in Rodlowe, Shropshire, England.