Alfonso de Aragón y Foix also called Alfonso I of Gandía "the old" and Alfonso IV of Ribagorza, was the eldest son of Count Peter of Ribagorza and Juana of Foix. He was the grandson of James II of Aragon and cousin of Pedro IV "the Ceremonious". He held the titles of Duke of Gandía, Count of Denia, Count of Ribagorza, Marquis of Villena, and first Constable of Castile.
- Occupation
- aristocrat
- Position held
- Count of Ribagorza
- Born
- 1332
- Died
- March 5, 1412
