1189 – Clare Abbey, Clarecastle, Co. Clare Established by Donal Mor O’Brien in 1189, the abbey at Clarecastle, County Clare was the first, largest and most important Augustinian house in the region.
1830 – Castle Forbes, Newtownforbes, Co. Longford Architect: J.J. McCarthy A 19th century castle of random ashlar, built about 1830, replacing an earlier house destroyed by fire.