William De Mandeville
William was born on December 3rd, 1062 in Great Waltham, Essex, England.¹   He died at the age of 67 on January 6th, 1130 in Rycott, Oxfordshire, England.¹ 

 Margaret Dapifer De Rie
Margaret Dapifer De was born on January 24th, 1075 in Oxford, Essex, , England.²   She died at the age of 55 on November 13th, 1130 in Rickling, Essex, England.¹ 

 Geoffrey Ii (Earl of Essex) De Mandeville
Geoffrey Ii (Earl of Essex) was born in 1106 in Rycott, Oxfordshire, , England.²   He died at the age of 38 on September 14th, 1144 in Mildenhall, Suffolk, England.¹