It would probably be a big help if you could get your ancestor's death record to seewho his parents were (if they were listed). If your ancestor was born c1840, many parishes did not yet keep records so you might not find his Baptism. You can alwaystry Irishroots.com to be sure. I have Hannigans who intermarried with my Kennys. These Hannigans were fromDarragh. I don't know if they were from Darragh More or Darragh Beg, but it isin the general Kilfinane area.