William De StMartin
William was born in 1033 in Varenne, St Aubin Le Cauf, Dieppe, Normandy.¹   He died at the age of 20 in 1053.¹ 

 Maude De Burgh
Maude was born in 1015 in Normandy.¹   Maude is no longer alive.

 Geoffrey De Mandeville
Geoffrey was born in 1036 in Rycott, Oxford, England.¹   He died at the age of 49 in 1085 in Westminster Abbey, Westminster, Middlesex, England.¹