Diane:
This should help some. From Lewis' Topographical Dictionary. Link below extract.
"RATHASPICK, a parish, in the barony of MOYGOISH, county of WESTMEATH, and province of LEINSTER, on the mail coach road from Dublin to Sligo; containing, with the market and post-town of Rathowen (which is separately described), 2170 inhabitants. This parish is bounded on the west by Lough Glynn, and on the south and east by the river Inny. It comprises 4542 statute acres, exclusively of a considerable portion of bog: the land is good for pasture and tillage, and the system of agriculture is improving. Limestone abounds, for which there are quarries, and there is also abundance of limestone gravel and marl. Petty sessions and fairs are held at Rathowen."
http://www.booksulster.com/library/topog/r.phpAnd here is Rathowen.
"RATHOWEN, a market and post-town, in the parish of RATHASPICK, barony of MOYGOISH, county of WESTMEATH, and province of LEINSTER, 10 1/2 miles (N. W.) from Mullingar, on the road to Longford, and 50 (W.) from Dublin; containing 605 inhabitants. The town comprises 97 thatched and 12 slated houses, the parish church, the R. C. chapel of the union of Russagh (in which a small school is held), and the market-house, where a market is held every Tuesday; there are fairs on May 15th and on the second Tuesday in December: it is also a constabulary police station."
Hope this helps.
Good luck,
Pat