Cochrane and his brother Andrew defeated the patron’s nominees at Grampound in 1807, only to be unseated for want of due property qualification in the following March. Their political affiliation was doubtful, but reputedly radical; and the Marquess of Buckingham believed they would vote with opposition.
Cochrane never spoke in the House. It was probably he who, as ‘G. A. Johnstone’, voted, like his brother Andrew, for their nephew Lord Cochrane’s motion on 7 July 1807 and against the Irish insurrection bill, 13 Aug. On 25 Apr. 1809 he voted for the censure of ministerial corruption. He appeared in the opposition majority on the conduct of the Scheldt expedition on 5 Mar. 1810, but the Whigs were ‘doubtful’ of him and if they expected him to turn up again on 30 Mar. on the same question they were disappointed.
