Leitrim-Roscommon

I am trying to break thru a brick wall.
GGrandmother =Ann Higgins b.1822-1825
GGrandfather = Luke Grace b. 1818-1820
Both were Catholic.
Both were born Ireland but County is unknown.
Luke Grace arrival in USA c. 1846-1850.
Ann Higgins arrival in USA is unknown.
Port of Entry to USA = unknown
Marriage location = unknown.

Lived in Cleveland, Ohio - raised 4 children born between 1853 - 1861.

Has anybody seen either of these names in Ireland records, ie;
birth, baptism, marriage, etc.

Thank You,
Bob Grace

Both names appear all over Ireland according to the Irish Times site. Try looking at other Irish immigrants in SC. Most tended to go where they had contacts--cours there had to be the first one.If you find a high number of Irish from a particular county, that might be a good place to start. Have you looked at the baptismal and marriage records? sometimes you get lucky and the county is listed. Cemetery records? I had no idea that the people I was researching had their parish and townland on their tombstones despite the fact that I had attended manyl a funeral in the cememtery when I was young. Very annoyed when I made the trk 2 years ago just to get dates and found the additioinal info!