Maitland, eldest son of Adam Maitland, was born at his father's seat,
Cumstoun House,
Kirkcudbrightshire, on 9 October 1792. He studied at Edinburgh, and was called to the Scottish bar in December 1813. After practising successfully for a quarter of a century, he was on 9 May 1840 appointed solicitor-general in
Lord Melbourne's administration. He vacated the office in September 1841 on the accession of the Tories under Peel to power. On the death of his father in July 1843 he succeeded to the family estates, and sat in parliament for Kirkcudbrightshire from 1845 to 1850.
Lord John Russell reappointed him solicitor-general on 6 July 1846, and he remained in office until January 1850. After
Jeffrey's death he was on 6 February 1850 named a lord of the court of session, and took the title of Lord Dundrennan. While his own residence was being repaired, he went to stay with his brother,
Edward Francis Maitland, Lord Barcaple, in 31 Melville Street, Edinburgh, and died there of paralysis on 10 June 1851. ==Works==