Pope Callixtus III (died 1458)

Pope Callixtus III

Head of the Catholic Church from 1455 to 1458

Pope Callixtus III, born Alonso de Borja, but referred to in English-language accounts as Alfonso de Borgia as a member of the House of Borgia, was head of the Catholic Church and ruler of the Papal States from 8 April 1455 to his death, in August 1458.