Ireland + Ancestry

Just dropped off Stewart at the airport.  He's headed to the northern parts of the Republic of Ireland, not to be confused with Northern Ireland, to meet distant and long lost maternal relatives.  His cousin George from New England is meeting him there, a potentially dangerous combination those two.  

I too am pursuing my ancestry, although I have not gotten very far yet.  My motivation is Dad's 80th birthday next Summer, with me hoping I can trace his lineage back to Europe.  My suspicion is that we are Scottish, and that our actual last name is MacNab, with an 'a' being deleted and a 'b' being added on somewhere between the British Isles and North Carolina/Virginia/Kentucky.  But we'll see.