[Darren McCarty]

McCoy is USUALLY Scottish, although it could be Irish. (Mac Aodha is the old Irish - roughly translates to fire). McGaughey is usually Irish (Horseman). McCaughey is definitely Irish. Mac hEochaidh. (Son of Eochaidh.) It's pronounced Owey.

[Little Bill]

I was on a web site and did a search on McGaughey and ended up in Ulster. There a Black Protestant McGaughey was hurling Sulpher and Brim Stone on Quivering Papest Mcgaughey’s.