There have been two baronetcies created for persons with the surname Colquhoun ("Cohoon"), one in the Baronetage of Nova Scotia (1625) and one in the Baronetage of Great Britain (1786).[1]
The second baronetcy in 1786 was created to rectify confusion over the first. However, a third branch of the family, the Colquhouns of Tillyquhoun, also continued to assert themselves as baronets until their extinction in 1838. Robert Colquhoun was thus titled the 12th baronet.[2][3]