On August 18, 1443, he was elected Master of the Order of Calatrava[7] and dismissed on September 19, 1445, replaced by Pedro Girón.

[8] Received the title of count of Ribagorza by his father John II in Monzón,[n. 2] and resigned on November 27, 1469, to be succeeded by his first son Fernando.

[6][10] In 1475 he was named Duke of Villahermosa by his father John II of Aragon[8] as a reward for his loyalty and military value.

Alfonso of Aragon and Escobar died in Linares in 1485, not long after making to Pizarra, Málaga.

[11] In 1477 Alfonso married with Leonor de Sotomayor of Portugal, daughter of Juan de Sotomayor and Isabel of Portugal with whom he had three children: With María Junquers, daughter of Mosen Gregorio de Junquers, he had two extramarital children: The premature death of his eldest son, Fernando, at the age of three years in 1481, would make the duchy passed to the second son of the marriage: Alfonso, who would inherit the duchy at 6 years in 1485.