Pope Sixtus V (13 December, 1520 – 27 August, 1590), born Felice Peretti di Montalto, was Pope from 1585 to 1590. Felice Peretti was born at Grottammare, in the Papal States, son of Piergentile di Giacomo, nicknamed "Peretto", and Marianna da Frontillo. He took the surname "Peretti" in 1551 and was more generally known as "di Montalto"[2]. He was reared in poverty; born in a shanty so ill-thatched that the sun ...