James Douglas sat on the Earl of Morton’s interest for Orkney and Shetland, a constituency which supplied many recruits to the Royal Navy. Absent from Parliament for long periods on naval duty, he followed his patron’s line and was counted by Dupplin in 1754 among the Scots Members attached to Newcastle rather than to Argyll.
In 1756 he was one of the three naval M.P.s appointed to the court martial on Admiral Byng, and like Morton had no qualms of conscience on the sentence. When on 2 Mar. 1757 the members of the court were examined at the bar of the House of Lords, he emphatically answered ‘No’ to the questions as to whether he knew of anything which would show the sentence to be unjust, and whether he wished the bill dispensing with the oath of secrecy to pass into law.
Thereafter until nearly the end of the war he was almost continuously absent from Parliament on active service: in 1756 at Rochfort; 1759, at Quebec; 1761, in command of the squadron which captured Dominica; 1762, with Rodney at Martinique and with Pocock at Havana. He was absent at the general election of 1761 when the Morton interest in Orkney and Shetland had to face a contest.
He returned from the West Indies in time to attend the opening of the parliamentary session in November 1762.
In 1766 Morton sold Orkney and Shetland to Sir Lawrence Dundas, and at the 1768 election the seat passed into the control of the Dundas family. Douglas did not apparently attempt to re-enter Parliament, but devoted himself to his naval career.
He died 2 Nov. 1787.
