Bertram de Verdon
Bertram was born in 1052 in Farnham Royal, Buckingham, Eng.  He died after 1115.

 Maud de Ferrers
Maud was born in 1096 in Derbyshire, Eng.  Maud is no longer alive.

 Norman de Verdon
Norman was born in 1115 in Farnham Royal, Buckingham, Eng.  He died about 1167 in England.