_Eustache II Baron de Fiennes___________
_Enguerrand I Baron de Fiennes___________________________|_Margaret of Guines_____________________
_William I de FIENNES Baron de Fiennes & Tingy_|
| | _Faramus de BOULOGNE ___________________
| |_Sibyl de BOULOGNE ______________________________________|_Matilda _______________________________
_Enguerrand II FIENNES Baron de Fiennes & Tingy, K.B._|
| | _Alberic I C of Dammartin_______________
| | _Alberic II C of Dammartin_______________________________|________________________________________
| |_Agnes de Dammartin____________________________|
| | _Renaud II C of Clermont________________
| |_Maud of Clermont________________________________________|_Clemence of Bar-le-Duc_________________
_William II de FIENNES Baron de Fiennes & Tingy_|
| | ________________________________________
| | _________________________________________________________|________________________________________
| | _James Seigneur de Conde_______________________|
| | | | ________________________________________
| | | |_________________________________________________________|________________________________________
| |_Isabel de Conde______________________________________|
| | ________________________________________
| | _________________________________________________________|________________________________________
| |_______________________________________________|
| | ________________________________________
| |_________________________________________________________|________________________________________
|
|--Margaret de FIENNES
|
| _Gauthier II C of Brienne_______________
| _Erard II C of Brienne___________________________________|_UNKNOWN _______________________________
| _Jean de BRIENNE Emporer of Constantinople_____|
| | | _Amadeus de Montfaucon C of Meompelgard_
| | |_Agnes of Montfaucon_____________________________________|________________________________________
| _Jean de BRIENNE _____________________________________|
| | | _Ferdinand II K of Leon_________________
| | | _Alfonso IX K of Leon____________________________________|_Urraca of Portugal_____________________
| | |_Berengaria of Leon____________________________|
| | | _Alfonso VIII K of Castile______________
| | |_Berengaria Queen of Castile_____________________________|_Eleanor of England_____________________
|_Blanche de BRIENNE ____________________________|
| _Hugh V Vicompte de Chateaudun__________
| _Geoffrey Vicompte de Chateaudun_________________________|_Jeanne de PREUILLY ____________________
| _Geoffrey Vicompte de Chateaudun_______________|
| | | ________________________________________
| | |_Alice de Freteval_______________________________________|________________________________________
|_Jeanne de CHATEAUDUN ________________________________|
| ________________________________________
| _William des Roches Seneschal of Anjou, Maine & Touraine_|________________________________________
|_Clemence des Roches __________________________|
| ________________________________________
|_Marguarite of Sable_____________________________________|________________________________________
The "Dictionary of National Biography" at the end of the article on Roger
II Mortimer states , however, that Edmund (Mortimer) married "Margaret
... doubtless the daughter of William de Fiennes, a Picard nobleman, who
was second cousin to (Queen) Eleanor through her mother Joan, countess
of Ponthieu."