William De Mandeville
William was born about 1066.  He died about 1130 in England.

 Margaret De Rie
Margaret was born about 1071.  She died in England.

 William De Mandeville
William was born in 1088.

 Geoffrey De Mandeville
Geoffrey was born in 1092 in Great Waltham, Essex, England.  He died at the age of 52 on September 14th, 1144 in Mildenhall, Suffolk, England.

 Beatrix De Mandeville
Beatrix was born about 1115 in Rickling, Essex, England.  She died before April 19th, 1197 in Rickling, Essex, England.