David Hay, 14th Marquess of Tweeddale

Marquess of Tweeddale is a title of the Peerage of Scotland, created in 1694 for the 2nd Earl of Tweeddale. Lord Tweeddale holds the subsidiary titles of Earl of Tweeddale, Earl of Gifford (1694), Viscount of Walden (1694), Lord Hay of Yester (1488), and Baron Tweeddale, of Yester in the County of Haddington (1881), all but the last in the Peerage of Scotland. As Baron Tweeddale in the Peerage of the United Kingdom, Lord Tweeddale sat between 1881 and 1963 in the House of Lords. The Marquess's eldest son uses Viscount Walden as a courtesy title.