On 2 April 1616 he was created Viscount of Lauderdale, by Letters Patent, to him and his heirs male and successors in the lordship of Thirlestane. He was subsequently made President of the Privy Council, and was appointed an Ordinary Lord of Session on 5 June 1618. He was at that time one of the Commissioners for the Plantation of Kirks. On 14 March 1624, at Whitehall, London, he was created, by patent, Earl of Lauderdale, Viscount Maitland, and Lord Thirlestane and Boltoun.
Later life
Lord Lauderdale was removed from his place on the bench, on 14 February 1626, in consequence of a resolution by King Charles I that no nobleman should hold the seat of an ordinary Lord, and instead was on 1 June following appointed one of the Extraordinary Lords of Session, usually reserved by the Crown for either noblemen or dignitaries of The Church. He remained an Extraordinary Lord until 8 November 1628, and in the following year was appointed one of the Lords of the Articles. Regardless of the honours generously bestowed upon him by his monarch, upon the breaking out of the English Civil War, he joined the side of the parliament and was employed in a great variety of commissions of importance. On 4 June 1644 he was elected President of the parliament, and reappointed on 7 January following. He died before the 20th of the same month, and was interred in the Maitland family burial vault within St. Mary's Collegiate Church, Haddington. A poetical epitaph on him by Drummond of Hawthornden, as also the one by King James VI on his father, the Chancellor, can be found in George Crawfurd's Peerage.
Marriage and Issue
He married Lady Isabel Seton, daughter of Alexander Seton, 1st Earl of Dunfermline, celebrated by Arthur Johnston in his poems. They had a large family of whom only three sons and one daughter survived their parents. Comment :- Latter Day Saints has Isobel Seton b.03 Nov 1593 daughter of Robert Seton :- 1st Earl of Winton, 8th Lord Seton by his wife Margaret Montgomerie as the wife of John Maitland, this is also the younger sister of Robert Seton 2nd Earl of Winton who had married Ann Maitland the sister of this John Maitland.
