He married María of Navarra, daughter of King
Charles II of Navarre and
Joan of France on January 20, 1393, in Tudela, Navarre. After her death, he contracted a second marriage with of Villafeliche. He had no legitimate children but a son out of wedlock named Jaime of Aragon, to whom his father gave the barony of Arenós and other places. He was pretender to the throne of the
Crown of Aragon during the
Caspe Compromise after the death of his father claiming a better right to the throne being a straight male descendant of King
Jaime II of Aragon, but he had very little support and finished in the final vote without any vote in his favor. He fought beside Fernando of Antequera, who was elected King of Aragon, during the siege of Balaguer when
Jaime II of Urgell, one of the pretenders to the throne,
revolted against King Fernando, blocking the city gates of
Lleida, and negotiating the surrender of the rebels. Alfonso
the younger prompted the construction of important monuments such as the
Monastery of Sant Jeroni de Cotalba and the
Ducal Palace of Gandía, which were formerly initiated by his father
Alfonso of Aragon and Foix,
the elder. After his death without legitimate descendants, came a lawsuit on the succession of his territories, which was resolved temporarily by giving Gandia to his nephew
Hugo Cardona and Ribagorza. A few years later, in 1433, Hugo de Cardona had to cede the Duchy of Gandia to the infante Juan of Aragon, the future
John II of Aragon. In this way, the titles of Duke of Gandia and Count of Ribagorza were joined again. == See also ==