Trying to find answers to my ancestry

Smaloy:

Possibly the surname was Molloy in Ireland. In any event, I would suggest that you take a general DNA test. In addition to an ethnicity breakdown, you may be pointed to a more specific area in Ireland. Also, you will have matches and some may be on the Maloy/McLoy line which may provide leads. Have you worked back from your parents to this gr gr grandfather and determined when he came over, who he married and when he died? Maybe a death record would show his parents names.

Roger McDonnell

Can you provide more details? First name? Approx birth year? Year of emigration? Wife's name? Children's names? Year of death?  Anything you can give us will help.