_Alfonso X IVREA __________+ | (1221 - 1284) _Sancho IV IVREA ____| | (1258 - 1295) | | |_Violant of BARCELONA _____ | (1236 - 1301) _Ferdinand IV IVREA ____________| | (1285 - 1312) | | | _Alfonso IVREA ____________+ | | | (1202 - 1271) | |_Maria of IVREA _____| | (1265 - 1321) | | |_Mayor Alfonso DE MENESES _ | (1230 - 1265) | |--Constance of IVREA | (1308 - 1310) | ___________________________ | | | _____________________| | | | | | |___________________________ | | |_Constanza Dinisez of BURGUNDY _| (1289 - 1313) | | ___________________________ | | |_____________________| | |___________________________