1958 papal conclave
Following the death of Pope Pius XII on 9 October 1958, the 1958 papal conclave met from 25 to 28 October and on the eleventh ballot elected Angelo Giuseppe Roncalli, Patriarch of Venice, to succeed him. He accepted the election and took the name "John XXIII". He was the second Patriarch of Venice to be elected Pontiff in the 20th century after Pope Pius X.