Background
A member of the House of Trastamara, Henry was the third son of King Ferdinand I of Aragon and Eleanor of Alburquerque, 3rd Countess of Alburquerque.
A member of the House of Trastamara, Henry was the third son of King Ferdinand I of Aragon and Eleanor of Alburquerque, 3rd Countess of Alburquerque.
In 1409, Lorenzo Suárez de Figueroa, Grand Master of the Order of Santiago, died. Infante Henry was proclaimed the new Grand Master despite being a child of merely nine years. In 1420, Henry, with the help of some other noblemen, laid siege to the castle in which John II was residing, claiming that the King had been kidnapped by de Luna and demanding the King"s surrender.
After a few days, however, he lost the support of the noblemen and had to give up.
The Infante was arrested and charged with treason and imprisoned in the Castle of Mora. After Álvaro de Luna was disgraced in 1427, Henry regained some of his former power.
Henry then had to flee again, this time seeking shelter in the Kingdom of Naples. Alfonso was there fighting for the crown of Naples.
His mother died in 1435, having willed her comital title to Henry.
The new Count of Alburquerque returned to Castile one last time in 1438, after an uprising of the noblemen. He took part in the uprising and armed conflicts with his brother-in-law.
Henry of Aragon (1445–1522), 1st Duke of Segorbe, whose granddaughter Anne was the last member of the House of Trastamara.