Beatty is a surname of Scottish and Irish origin. In the Scottish case, it is derived from the name Bartholomew, which was often shortened to Bate. Male descendants were then often called Beatty, or similar derivations like Beattie or Beatey. The name Beatty also arose in Ireland from Betagh, a surname meaning hospitaller. A majority of people named Beatty or Beattie in Ireland are the descendants of Scots who came over in the seventeenth century, and live in northeast Ulster. The remainder live much further south.

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