The Earl of Tweeddale is a title in the peerage of Scotland, created in 1694. The title is associated with the region of Tweeddale, located in the Scottish Borders. The Earl's family has a long history, with the first holder being William Hay, who was a prominent figure in Scottish politics and society. The current Earl of Tweeddale is a member of the House of Lords, the upper house of the UK Parliament. The title has been passed down through generations, and the family has played significant roles in Scottish history, including involvement in the Scottish Enlightenment and various political movements.