Through his father’s family, Murray was connected with the Duke of Queensberry to whom he owed his early legal preferment. Succeeding his father as sheriff of Peebles and commissary of Edinburgh, he was particularly commended to Lord Suffolk by Lord Justice Clerk Thomas Miller in 1773 for his conduct as deputy lord advocate on circuit,
Despite his influential connexions Murray was not particularly ambitious. ‘He owned that objects at the Scotch bar were limited ... But what can a man do better after he is once there.’
Absent through illness from the division on 20 Feb. 1782 on the censure of the Admiralty, Murray does not appear in any division list until 15 Mar. when he voted with Administration on Rous’s motion of no confidence. Promoted to the Scottish bench in February 1783, he also obtained the reversion of the office of clerk of the pipe,
Murray returned to the congenial life of Edinburgh, where he died of cholera 16 Mar. 1795.
