_Érard II of BRIENNE ___+ | (.... - 1190) _John I BRIENNE __________| | (1170 - 1236) m 1224 | | |_Agnes of MONTFAUCON ____+ | _John BRIENNE __________| | (.... - 1296) | | | _Alfonso IX IVREA _______+ | | | (1171 - 1230) | |_Berengaria of IVREA _____| | (1204 - 1237) m 1224 | | |_Berengaria of IVREA ____+ | (1179 - 1246) | |--Blanche of BRIENNE | (1252 - 1302) | _Geoffrey V CHÂTEAUDUN _+ | | (.... - 1218) | _Geoffrey VI CHÂTEAUDUN _| | | (.... - 1249) | | | |_Adelicia of NEVERS _____ | | |_Jeanne of CHÂTEAUDUN _| (1227 - 1252) | | _________________________ | | |_Clemence of ROCHES ______| | |_________________________