John Petty, 2nd Marquess of Lansdowne

John Henry Petty, 2nd Marquess of Lansdowne (2 May 1765 – 15 November 1809) was the eldest son of the 1st Marquess, known to history as the Earl of Shelburne, the British prime minister who concluded the Peace of Paris recognising American independence, by his first wife, Lady Sophia Carteret.