Question: is nesbitt an irish name?
Answer: Scottish (Borders), northern English, and northern Irish: habitational name from any of several places in the Border region of Scotland called Nesbit(t) or Nisbit, named in northern Middle English with nese 'nose' + bit 'mouthful', 'piece of ground' (Old English bita) or bit 'bend' (Old English byht, modern bight).