Complex sentence: Urban VII, born "Giovanni Battista Castagna" (August 4,1521--September 27,1590) was pope for thirteen days in September 1590, was of Genoese origin, although born in Rome.
Split into simpler sentences: Urban VII, born "Giovanni Battista Castagna" (August 4,1521--September 27,1590) was Pope for thirteen days in September 1590. He was of Genoese origin, although born in Rome.