Macpherson Grant had an ‘expensive’ education and in 1798 was said to be training as a writer to the signet, but he does not seem to have persevered in this line.
In 1812 Macpherson Grant made way for Lord Stafford’s nephew James Macdonald, but he again filled the breach when Macdonald resigned the seat in 1816 over his political differences with the Staffords, who were now supporting government. He voted with them against Tierney’s censure motion, 18 May 1819, but his only other known votes between 1816 and 1820 were for Catholic relief, 9 May 1817, and for inquiry into criminal law reform, 2 Mar. 1819; and he was granted six weeks’ leave of absence on account of ill health on 20 May 1819.
