My great grandfather married Sarah Nesbitt (C of I) of Ballylast, Castlefinn, Co Donegal in 1862. Her father was John Nesbitt of Ballylast and her mother was Margaret X born 1811 (90 in 1901 census). I would like to know whether John Nesbitt was linked to the Tullydonnell or Greenhills Nesbitts or to some other Donegal Nesbitt Family.