William de Mandeville
William was born about 1062 in Rycott, Oxford, England.  He died in 1130 in England.

 Margaret de Rie
Margaret was born about 1065.

 Geoffrey de Mandeville
Geoffrey was born about 1092.  He died on September 16th, 1144 in Mildenhall, Suffolk, England.  He was buried in 1163 in New Temple Church, London, England.

 Beatrice de Mandeville
She died on April 19th, 1197 in Rickling, Essex, England.  She was buried in Walden Abbey, Essex, England.