Saint Ignatius of Loyola is best known as the co-founder of the Society of Jesus (Jesuits) in 1539. A dozen years later, he also established the Roman College. This evolved into the Pontifical Gregorian University. Gregoriana now educates about 3,800 students. Most of them are priests or seminarians. Since 1930, classes have been conducted inside of Palazzo Gabrielli-Borromeo.