Portrait of George Hay (1753-1804), 7th Marquess of Tweeddale, full-length, in a blue coat, a gold waistcoat and a white stock, holding a top hat and a cane, his peer's robes on the chair beside him, with a hound, a ship at sea beyond

George Hay, 7th Marquess of Tweeddale, the great grandson of John, 2nd Marquess of Tweeddale, Lord Chancellor of Scotland, whose wife, Lady Mary Maitland (d. 1702) was the only child and heiress of John Duke of Lauderdale, inherited on the death of his first cousin once-removed, George, 6th Marquess of Tweeddale, in 1777. This ambitious portrait which Mosnier exhibited at the Royal Academy in 1795, may well have been commissioned to commemorate Tweeddale's appointment as Lord Lieutenant of Haddingtonshire in 1794. The Marquess married Lady Hannah Charlotte Maitland, daughter of the 7th Earl of Lauderdale in 1785, with whom he was to have five sons and four daughters. The Marquess and Marchioness went travelling on the Continent in 1802, on account of his health, beginning in France, but the following year when war broke out between the two countries, they were interned by the French, with other British subjects, and imprisoned in the fortress at Verdun, where the Marchioness died on 8 May 1804 and her husband in August the same year.