_Ferdinand I TRASTÁMARA _____+
| (1380 - 1416)
_Alfonso V TRASTÁMARA _|
| (1396 - 1458) |
| |_Eleanor of IVREA ____________+
| (1374 - 1435)
_Ferdinand I TRASTÁMARA _|
| (1423 - 1493) |
| | _Henry III TRASTÁMARA _______+
| | | (1379 - 1406)
| |_Maria of TRASTÁMARA __|
| (1401 - 1458) |
| |_Catherine of LANCASTER ______+
| (1373 - 1418)
|
|--Joanna of TRASTÁMARA
| (1479 - 1518)
| _Ferdinand I TRASTÁMARA _____+
| | (1380 - 1416)
| _John II TRASTÁMARA ___|
| | (1398 - 1478) |
| | |_Eleanor of IVREA ____________+
| | (1374 - 1435)
|_Joanna of TRASTÁMARA ___|
(1455 - 1516) |
| _Fadrique ENRÍQUEZ __________+
| | (1390 - 1473)
|_Juana ENRÍQUEZ _______|
(1425 - 1467) |
|_Mariana Fernández of AYALA _
(1394 - 1431)