Alfonso XI of Castile

Alfonso XI, called the Avenger, was King of Castile and León. He was the son of Ferdinand IV of Castile and his wife Constance of Portugal. Upon his father's death in 1312, several disputes ensued over who would hold regency, which were resolved in 1313.

13 August 1311

Born on the same birth day (13 August): Alex de Renzy • Antonia Lottner • Dan Fogelberg • Elvis Grbac • Felix Wankel • Fidel Castro • Frederick Sanger • Jane Carr • Makarios III • Román Colón • Salomon Jadassohn • Sarah Huckabee Sanders • Thomas Pogge • Tom Niedenfuer