John Petty, 2nd Marquess of Lansdowne

John Henry Petty, 2nd Marquess of Lansdowne (6 December 1765 – 15 November 1809) was a British peer and politician. He was the eldest son of Lady Sophia Carteret and British Prime Minister William Petty, 1st Marquess of Lansdowne, known to history as the Earl of Shelburne. The Earl concluded the Peace of Paris recognising American independence, by his first wife,
Lansdowne travelled widely despite his ill health, which in turn was not helped by the burden of the debts he inherited from his father. To repay them, he sold almost all of his father's collections, leaving Bowood House, the family seat, temporarily uninhabitable.
He served in the House of Commons for Wycombe, his father's old seat, from 1786 to 1802, but due to his weak constitution he only survived his father by four years. He died childless and was succeeded in the marquessate by his half brother, Henry Petty-Fitzmaurice.
He married Mary Arabella Maddox (died 24 April 1833), the daughter of Rev. Hinton Maddox and the widow of Duke Gifford, on 27 May 1805.