The Pontifical Gregorian University (Italian:Pontificia Università Gregoriana; also known as the Gregorianum, or the PUG, or Greg) is a pontifical university located in Rome, Italy. It was originally a part of the Roman College founded in 1551 by Saint Ignatius of Loyola. The Collegio included all grades of schooling, and it is its university division of philosophy and theology that was given Papal approval in 1556 that made it the first university founded by the Society of Jesus (Jesuits). In 1584 the university was given a grandiose home by Pope Gregory XIII, after whom it was renamed. Only the theology and philosophy departments survived the political turmoil in Italy after 1870. Its international faculty serves around 3800 students from over 150 countries.