John II of Castile King of Castille and Leon (1405–1454) Parents Catherine of Lancaster Enrique III of Castile Children Infanta Maria of Castile Infanta Leonor of Castile Henry IV of Castile Alfonso Isabella I of Castile Catherine Siblings Maria of Castile, Queen of Aragon Infanta Catherine, Duchess of Villena Partners Maria of Aragon Isabella of Portugal
