Geoffrey FitzPiers De Mandeville
Geoffrey FitzPiers was born in 1162 in Northhampton, England.  He died at the age of 51 on October 14th, 1213 in Walden, Essex, England.

 Aveline De Clare
Aveline was born in 1172 in Hereford, Herefordshire, England.  She died at the age of 53 on June 4th, 1225.

 John FitzGeoffrey
John was born on May 29th, 1205 in Shere, Surrey, England.  He died at the age of 53 on November 23rd, 1258 in Farmbridge, Essex, England.

 Hawise FitzGeoffrey
Hawise was born in 1210 in Shere, Surrey, England.  She died before 1243.

 Cecily FitzGeoffrey
Cecily was born about 1212 in Shere, Surrey, England.