The parish equivalent

A brief follow up to the first post under Leitrim generally.  I have checked a map of each parish of Leitrim, and Leitrim appears to be kind of rugged.  Ancestor Rober Kincade was from the report of his son in his death certificate from The civil parish of Kiltyclogher, born circa 1838.  Now this makes for bad tidings.  Although he married Mary Delany in 1867 in Geelong, the nature of this marriage goes against the tide of the Delany's natural inclination if Robert wasn't Roman Catholic.  His reporting of Kiltyclogher, a civil parish, does this indicate he was not Catholic at birth?  Of all the Catholic parishes of Leitrim, is Rossniver the only possible candidate of a Catholic equivalent parish?  It seems the records of Leitrim are at least 27 years too late if his birth relied upon a civil registration, seeing they're consistently cited as beginning in 1865.  More importantly, does citing a civil parish as a place of your birth mean he was not Catholic?