Earl of Cornwall Guillaume de Mortagne
Guillaume was born in 1064 in Mortagne, Artois, Pas-de-Calais, France.¹   He died at the age of 76 in 1140 in Cornwall, England.² 

 Isabel FitzRichard de Clare
Isabel was born in 1065 in Clare, Suffolk, England.¹ 

 Aldhelm de Burgo de Mortaigne
Aldhelm was born in 1085 in Cardigan, Cornwall, England.²   He died in Burgh-Next-Aylsh, Norfolk, England.² 

 Agnes de Mortaigne
Agnes was born in 1087 in Cardigan, Cornwall, England.¹ 

 Joan de Mortaigne
Joan was born in 1090 in Cardigan, Cornwall, England.¹ 

 Beatrice FitzWilliam de Mortaigne
Beatrice was born in 1115 in Cardigan, Cornwall, England.¹