Filbert deDouvres
Filbert was born in 1170 in Chilham Castle, Kent, England.  He died at the age of 38 in 1208.

 Isabel de Briwere
Isabel was born in 1181 in Stoke, Devonshire, England.  She died at the age of 52 on June 10th, 1233.

 Rohese of Dover
Rohese of Dover was born about 1188 in Chilham, Kent, England..  She died in 1264.