Rome October 25, 1962 Appeal for peace in the world by Pope John XXIII. Pope John XXIII, Ioannes XXIII), born Angelo Giuseppe Roncalli 25 November 1881 _ 3 June 1963, was the head of the Roman Catholic Church from 28 October 1958 to his death in 1963. (Photo by: SeM Studio/Fototeca/Universal Images Group via Getty Images)