Felice Peretti was born on 13 December 1521 at Grottammare, in the Papal States,[REF][REF] to Pier Gentile (also known as Peretto Peretti), and Marianna da Frontillo [REF].
According to Isidoro Gatti, the Peretti family came from Piceno, today's Marche, in Italy [REF].