Infantes of Aragon

The Infantes of Aragon (Spanish: Los Infantes de Aragón) is an appellation commonly used by Spanish historians to refer to a group of 15th-century infantes (princes) of the House of Trastámara, specifically the sons of King Ferdinand I of Aragon and his wife Eleanor of Alburquerque:

The death of King Henry III of Castile in 1406 left the Crown of Castile in the hand of an infant son, John II of Castile. In his will, Henry III had appointed his brother Infante Ferdinand of Antequera as regent for the young king. Ferdinand used the position to secure advancement for his own children. After the death of the childless king Martin of Aragon in 1410 left the Crown of Aragon without heirs, the estates, by the Compromise of Caspe in 1412, elected the Castilian prince Ferdinand of Antequera as King Ferdinand I of Aragon, Valencia and Barcelona.

After Ferdinand's premature death in 1416, he was succeeded by his eldest son as Alfonso V of Aragon. But the ambitious younger sons, particularly the Infantes John and Henry - the 'Infantes of Aragon' - were already entrenched with vast estates in Castile and sought to dominate political life during the reign of their impressionable cousin, king John II of Castile. In July 1420, Infante Henry engineered a coup in Tordesillas, dispossessed opposing nobles and seized effective control of Castilian government. In November of that year, the Infantes arranged the marriage of their sister Maria of Aragon to John II of Castile, thus consolidating their power (they also arranged the reciprocal marriage of John II's sister Maria of Castile to their eldest brother Alfonso V).

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