Alfonso I, Duke of Gandia

Alfonso de Aragón y Foix (1332 - Gandia, 5 March 1412) also called Alfonso I of Gandía "the old" and Alfonso IV of Ribagorza, was the eldest son of Count Pedro de Aragón y Anjou (Pedro IV 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 Gandia (from 1399), Count of Denia (since 1355), Count of Ribagorza (from 1361), Marquis of Villena (since 1366), and first Constable of Castile.

Alfonso I, Duke of Gandia

Alfonso de Aragón y Foix (1332 - Gandia, 5 March 1412) also called Alfonso I of Gandía "the old" and Alfonso IV of Ribagorza, was the eldest son of Count Pedro de Aragón y Anjou (Pedro IV 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 Gandia (from 1399), Count of Denia (since 1355), Count of Ribagorza (from 1361), Marquis of Villena (since 1366), and first Constable of Castile.