A mass rock (where mass was said while the Penal Laws were in effect) can be found near the Present Catholic Church in the Killina townland, approximately 1 km southeast of the ancient churches.
Rahan also has a long association with the Jesuit community who founded a seminary there in the early 19th century (1818) and with the Presentation Sisters who founded a convent and school in the early 19th century (1818 also), both Convent and School have survived to this day.