Looking for info on a Robert BUCHANAN b. 1820's? Donegal Ireland Robert is the son of: Alexander BUCHANAN b. 1790's in Donegal Ireland wife Jane CLARK Robert has a few siblings that were SUPPOSED to have settled in Mercerburg (spelling?) twp. Franklin CO. PA. I am attempting to see if THIS Robert is my 3x Gr/Grandfather. Also interested to see if a Joseph BUCHANAN wife: Ellen C. SMITH settled in Franklin CO before moving on to Indiana Co. Any info is MUCH appreciated. Thank you Melissa Buchanan Watson