_Sancho IV IVREA ____+ | (1258 - 1295) _Ferdinand IV IVREA ____________| | (1285 - 1312) | | |_Maria of IVREA _____+ | (1265 - 1321) _Alfonso XI BURGUNDY _| | (1311 - 1350) | | | _____________________ | | | | |_Constanza Dinisez of BURGUNDY _| | (1289 - 1313) | | |_____________________ | | |--Pedro Alfonso IVREA | (1330 - 1338) | _____________________ | | | ________________________________| | | | | | |_____________________ | | |_Eleanor of GUZMAN ___| (1310 - 1351) | | _____________________ | | |________________________________| | |_____________________