Ferdinand was born 27 November 1380 in Medina del Campo, the younger son of King John I of Castile and Eleanor of Aragon.

The most notable accomplishment of his brief reign was his agreement in 1416 to depose the Antipope Benedict XIII, thereby helping to end the Western Schism, which had divided the Roman Catholic Church for nearly 40 years.

He is buried in the Crown of Aragon's royal pantheon of the monastery of Poblet, in a magnificent tomb ordered by his son Alfonso to Pere Oller in 1417.

The Italian humanist Lorenzo Valla wrote an official biography of Ferdinand, Historiarum Ferdinandi regis Aragonum libri sex.

They had seven children: "He was tall, a little more than average, and thin and ruddy, and his cheeks had a few freckles... very patient to all who wanted to talk to him, even if their speeches were ordinary or not well-reasoned..."[7]