Returned for Edinburghshire as an opposition Whig on the recommendation of Robert Dundas, Gilmour voted against the Spanish convention in 1739. Receiving through James Erskine a whip from Pulteney asking opposition Members to come to London some time before the next session, which might ‘determine the fate of our liberties, if not of our being an independent nation’, he voted against the Government on the Spanish convention in 1739 and the place bill in 1740. After Walpole’s fall Gilmour followed his friend, Lord Tweeddale, the secretary of state for Scotland, through whom he became attached to Tweeddale’s leader and future father-in-law, Carteret,
He died 9 Aug. 1750.
