Editing John II of Castile (section)

==Family and children==
In 1418, John married [[Maria of Aragon, Queen of Castile|Maria of Aragon]], the oldest daughter of his paternal uncle, Ferdinand I of Aragon.{{sfn|Previte-Orton|1912|p=902}} The marriage produced:

*[[Catherine, Princess of Asturias]] (1422–1424), his heiress presumptive from her birth until her death
*[[Eleanor, Princess of Asturias]] (1423–1425), his heiress presumptive from the death of Catherine until the birth of Henry
*King [[Henry IV of Castile]] (1425–1474){{sfn|Previte-Orton|1912|p=902}}
*Infanta Maria (1428–1429)

Of all their children, only the future [[Henry IV of Castile]] survived infancy. John was widowed in 1445 and remarried to [[Isabella of Portugal, Queen of Castile|Isabella of Portugal]],{{sfn|Previte-Orton|1912|p=902}} daughter of [[John, Lord of Reguengos de Monsaraz|Infante John of Portugal]], with whom he had two children:

*Queen [[Isabella I of Castile]] (1451–1504){{sfn|Previte-Orton|1912|p=902}}
*[[Alfonso, Prince of Asturias (1453–1468)|Alfonso, Prince of Asturias]] (1453–1468){{sfn|Previte-Orton|1912|p=902}}