Pope Urban VII (4 August 1521 – 27 September 1590), born Giovanni Battista Castagna, was Pope for thirteen days in September 1590, the shortest papal reign in history. He was of Genoese origin, although born in Rome. He was created Cardinal-Priest of S. Marcello in 1584. He was chosen successor of Pope Sixtus V (1585–1590) on 15 September 1590, but died of malaria (27 September 1590) before coronation, making his the shortest papal reign in history.