Possibly the swiftest route to your roots.
Irish genealogy website directory.
www.igp-web.com/IGPArchives/ire/longford/census/census1659.txt
Description:
Barony: ARDAGH / Irish: 97 / English: 971 / Gentleman: Richard Archibold (Glynn), Darby Toole (Lisdrinagh), Captain J. / Edgeworth (Cranalagh) / Principal Families: Cline, Cargy, Cormack, MacCormack, Cowley, M'Connell, Farrell, Kiernan, Kenny, M'Gloughlin, Leavy, Murtagh, Mulligan, Moore, Reilly.