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- Sir William Johnstone, 1st Marquess of Annandale was the son of James Johnstone, 1st Earl of Annandale and Hartfell and Henrietta Douglas. He was born on 17 February 1663/64.
He married, firstly, Sophia Fairholm, daughter of John Fairholm and Sophia Johnston, on 2 January 1682 at Edinburgh, Scotland. He married, secondly, Charlotte van Lore, daughter of John van den Bempdâe and Temperance Packer, on 20 November 1718 at Fleet Chapel, London, England, without the consent of the father, and perhaps the mother, of the bride.
He died on 14 January 1720/21 at age 56 at Bath, Somerset, England. He was buried at Johnstone, Scotland and his will (dated 29 December 1720) was probated in August 1721.
William succeeded to the title of 2nd Earl of Annandale and Hartfell [S., 1662] on 17 July 1672, as well the 1661 creation. He succeeded to the title of 2nd Viscount of Annand [S., 1661] on 17 July 1672. He succeeded to the title of 2nd Lord Johnston of Lochwood, Lochmaben, Moffatdale and Evandale [S., 1662] on 17 July 1672, as well the 1661 creation.
He held the office of Herditary Steward of Annandale and Hereditary Keeper of Lochmaben Palace on 17 July 1672.
William was educated at University of Glasgow, Glasgow, Scotland.
In 1689 he raised and commanded two anti-Jacobite Troops of Horse against Viscount Dundee. He first plotted against King James II, and then for him.
He was invested as a Privy Counsellor (P.C.) [Scotland] in 1690. He held the office of President of the Council [Scotland] between 1693 and 1695. He held the office of Extraordinary Lord of Session between 1693 and 1721. He held the office of President of the Parliament [Scotland] in 1695. He held the office of Lord Treasurer [Scotland] between 1696 and 1705. He held the office of President of the Council [Scotland] between 15 May 1696 and 1705. He held the office of Lord High Commissioner to the General Assembly of the Church [Scotland] in 1701. He was created 1st Earl of Hartfell [Scotland] on 24 June 1701. He was created 1st Marquess of Annandale [Scotland] on 24 June 1701. He was created 1st Lord Johnston of Lochwood, Lochmaben, Moffatdale and Evandale [Scotland] on 24 June 1701. He was created 1st Viscount of Annand [Scotland] on 24 June 1701. He held the office of Lord Privy Seal [Scotland] between 6 May 1702 and 15 December 1702. He was invested as a Knight, Order of the Thistle (K.T.) on 7 February 1703/4. He held the office of Lord High Commissioner to the General Assembly of the Church [Scotland] in 1705. He held the office of a Principal Secretary of State between 9 March 1705 and 29 September 1705. He held the office of Representative Peer [Scotland] between 1708 and 1713, even though he was opposed to the Union. He held the office of Lord High Commissioner to the General Assembly of the Church [Scotland] in 1711. He was invested as a Privy Counsellor (P.C.) on 19 April 1711. He held the office of Great Seal [Scotland] between 1714 and 1716. He held the office of Lord-Lieutenant of Dumfries, Kirkcudbright and Peebles between 1715 and 1721. He held the office of Representative Peer [Scotland] between 1715 and 1721. He held the office of Privy Seal [Scotland] between 1715 and 1721.
Daniel Defoe described him as "tall, lusty and well shaped, with a very black cmplexion; extremely carried away by his private interests, possessing both good sense and a mnaly expression, but not much to be trusted" and "of no reputation on either side because steady to none."
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1663 - 1721 (57 years)
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