_Leopold III HABSBURG __+ | (1351 - 1386) _Ernest HABSBURG _______| | (1377 - 1424) m 1411 | | |_Viridis VISCONTI ______+ | (1352 - 1413) _Frederick V HABSBURG _| | (1415 - 1493) | | | ________________________ | | | | |_Cymburgis of PIAST ____| | (1394 - 1429) m 1411 | | |________________________ | | |--Kunigunde of HABSBURG | (1464 - 1520) | _John I AVIZ ___________+ | | (1357 - 1433) m 1387 | _Duarte AVIZ ___________| | | (1391 - 1438) | | | |_Philippa of LANCASTER _+ | | (1360 - 1415) m 1387 |_Eleanor of AVIZ ______| (1434 - 1467) | | ________________________ | | |_Leonor of TRASTÁMARA _| (1402 - 1444) | |________________________