In 1947, the decision to open a Jesuit school on the south side of Dublin was taken. The purchase in 1949 of Sandford Lodge and Sandford Hill belonging to the Bewley Estate consisted of 15 acres in Ranelagh, two miles south of Dublin city centre. The college opened on 8 September 1950, with 52 boys registering. The founding Jesuit Superior (and later first Rector) was Fr Charles O' Conor SJ (The O' Conor Don) (1906-1981) and the first Prefect of Studies was Fr Bill White SJ (1912-1988).