Isabella de Aviz de Portugal was born circa 1428 to John, Duke of Aveiro (1400-1442) and Isabella of Braganza (1402-1465) and died 15 August 1496 of unspecified causes. She married John II of Castile (1405-1454) August 1447 JL . Charlemagne (747-814)/s, Henry II of England (1133-1189)/s, Hugh Capet (c940-996)/s, William I of England (1027-1087)/s, Rollo of Normandy (860-932)/s.
|Offspring of John of Castile and Isabella of Portugal (c1428-1496)|
|Isabella I of Castile (1451-1504)||22 April 1451 Madrigal de las Altas Torres, Castile and León, Spain||26 November 1504 Medina del Campo, Castile and León, Spain||Ferdinand II of Aragon (1452-1516)|
|Alfonso of Asturias (1453-1468)|