Saint Jerome of the Croats is the national Catholic church of Croatia on Via Tomacelli in the Campus Martius of Rome. It is now a chapel of the Pontifical Croatian College of Saint Jerome in Rome and is only open to visitors by arrangement with the College.

Pope Sixtus V, born Felice Piergentile, was head of the Catholic Church and ruler of the Papal States from 24 April 1585 to his death, in August 1590. As a youth, he joined the Franciscan order, where he displayed talents as a scholar and preacher, and enjoyed the patronage of Pius V, who made him a cardinal. As a cardinal, he was known as Cardinal Montalto.