Geoffrey de Mandeville
Geoffrey was born about 1036 in Magneville near Valonges or Mandeville le Trevieres,Normandy,France.  He died after 1085 in Rycott, Oxford, England.

 Adeliza (Athelaise) de Balts
Adeliza (Athelaise) was born about 1040.

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

 Beatrice de Mandeville
Beatrice was born about 1064.