Extracted from "The Diocese of Killaloe – An Illustrated History" by Ciarán Ó Murchadha
Modern Roscrea includes the medieval parish of the same name, most of Corbally and a small part of medieval Bournea.
In 1704, a single registered priest, Fr. Laughlin Cunnane, had pastoral responsibility for the full three parishes.
For most of the eighteenth century a small building in Chapel Lane in Roscrea itself served for public worship for the combined parish, and this was replaced about 1812 by another modest-sized chapel beside the old friary, in the grounds of the present church.
In 1850, however, this was described as 'old and decayed,' too small for a congregation that tended to spill out into the street at Mass-times.