 St. Stanislaus College was sometimes titled "Domus Probationis et Studiorum Tulliolana" (The House of Formation and Studies at Tullamore) by the Jesuits.In 1918, Tullabeg became a formation house for Jesuits novices, where it became affectionately known as "the Bog".Some Jesuits would serve their Tertianship in Tullabeg.