If you go onto www.irishgenealog.ie you can find baptisms for the diocese of Kerry.
From there your Michael was born on 8th. March 1867, in Aghadoe, and baptised on 30th. March 1867, in the parish of Fossa, with parents Thadeus Clifford and Mary Leary.The sponsors were Eugene Clifford and Bridget Leary.It is very unusal to have such a gap between birth and baptism.Maybe he was sick.
Unfortunately, they have not put a copy of the original register on the site.
Make sure that you give the GRO Roscommon as much detail as you can, as four Michael Cliffords were registered for births in the Killarney Registrar's district in 1867.