James Grant became heir of entail to his father-in-law’s estate and baronetcy by a patent executed in 1704. In 1708, upon succeeding to the baronetcy, he became, in accordance with the patent, Sir James Colquhoun of Luss. But in the following year, when he succeeded to the Grant estates, the Colquhoun inheritance passed by the entail to his second son Ludovick, whereupon he reverted to his family name of Grant, retaining the title of baronet.
For nearly 20 years Grant was returned for Inverness-shire, on his family’s interest, consistently voting with the Administration. His only reported speech was made on 5 May 1732, asking for leniency for his relative, Sir Archibald Grant.
He died in London 16 Jan. 1747.
