Now, James’ descendants are often called the MacHamish line; I have seen a document in the National Library of Scotland written 23 September 1738 on Lord Strathnaver’s behalf where two spellings of the word Mckeamuish are used and one spelling of Mckaimish used when referring to this line and where no mention of ‘Clan Gunn Chief’ was made. MacHamish was a later anglicisation of this Mckeamuish / Mckaimish.
MacHamish was used as an indication of which Gunns were meant for legal and other reasons. Mark Rugg Gunn says ‘William son of James, succeeded his father and was known as Uilleam mac Sheumais; he was the first MacHamish’. If this line had been Chief of the Clan Gunn as Gunn myth would have it, then Chief of the Clan Gunn would have been how they were known rather than MacHamish, as Chief of a Clan would have been much more important than being ‘named’ after the basically anonymous James.
The use of the term MacHamish again shows that the Gunns never had Clan Chiefs.
 Page 166 MRG