Count Gilbert (Crispin) de Brienne
Gilbert, known as Crispin, was born in 0989 in Brionne, Eure, Normandy, France.¹   He died due to murder / assassination at the age of 51 in 1040 in Eschafour, Normandy, France.¹ 

 Constance d'Eu
Constance was born in 1009 in Eu, Seine-Inferieure, Normandy, France.² 

 Seigneur Osbern de Cailly
Osbern was born in 1026 in Brionne, Eure, Normandy, France.³ 

 Lord of Muelles Baldwin FitzGilbert
Baldwin was born in 1035 in Brionne, Eure, Normandy, France.¹ 

 Governor of Brionne Robert FitzGilbert
Robert was born in 1040 in Brionne, Eure, Normandy, France.¹