Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. The origin of the name Buchanan is believed to be shown on an ancient pedigree of the'o'cahans, of which the 102nd name is that of Conn Clonn t'ach o'cahan (son of who had a brother, Annselan, who was ancestor of the o'bo cainains (from the Irish bocain, a fairy,-and an, one). The name became o'buchanan, or Buchanan. This Annselan is believed to have been the first of the name who settled in Scotland.