Infante Henry of Aragon (1400 – 15 June 1445), Duke of Villena, 3rd Count of Alburquerque, Count of Ampurias, and Grand Master of the Order of Santiago, was the third son of King Ferdinand I of Aragon and Eleanor of Alburquerque, and a member of the House of Trastamara. His brothers were King Alfonso V of Aragon and King John II of Navarre (not to be confused with John II of Castile).
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Early life
In 1409, following the death of Lorenzo Suárez de Figueroa, Grand Master of the Order of Santiago, Infante Henry was proclaimed the new Grand Master despite being a child of merely nine years, which his father secured with the intervention of Benedict XIII.
After the Compromise of Caspe, Henry's father, Ferdinand of Castile, became the King of Aragon, which led the family to move to this kingdom. With his subsequent death, in 1416, they returned to Castile. In that time, Henry's mother, Eleanor, ceded the County of Alburquerque in his favor, rendering him one of the most powerful figures in the Castilian nobility, together with his brother John.