Pope Martin V (c. 1368 – February 20, 1431), born Odo (or Oddone) Colonna was Pope from 1417 to 1431. His election effectively ended the Western Schism (1378–1417). The son of Agapito Colonna and Caterina Conti, he belonged to one of the oldest and most distinguished families of Rome. His brother Giordano became Prince of Salerno and Duke of Venosa, while his sister Paola was shortly lady of Piombino in 1441-1445. He became apostolic proto...