John Leslie-Melville, 9th Earl of Leven

John Thornton Leslie-Melville, 9th Earl of Leven, 8th Earl of Melville (1786–1876) was a Scottish peer, and soldier.

He succeeded his brother David Leslie-Melville, 8th Earl of Leven.

He was Deputy Paymaster to the Forces in the Peninsula in 1809; he was a founding partner in the banking partnership Williams, Deacon, Labouchere, Thornton & Co; he was a Representative Peer for Scotland (Conservative) from 1865 to 1876.

Family
He was the son of Alexander Leslie-Melville, 7th Earl of Leven. He married first Harriet Thornton, daughter of Samuel Thornton; they had children: He then married Sophia Thornton, daughter of Henry Thornton (brother of Samuel Thornton, above); they had children:
 * Alexander Leslie-Melville, 10th Earl of Leven, 9th Earl of Melville (1817–1889)
 * Alfred John Leslie-Melville,
 * Emily Maria Leslie-Melville,
 * Julia Louisa Leslie-Melville.
 * Florence Evelyn Leslie-Melville (died 31 May 1864)
 * Kathleen Mabel Leslie-Melville (died 8 January 1958)
 * Ronald Ruthven Leslie-Melville, 11th Earl of Leven,
 * Norman Leslie-Melville (5 February 1839 – 13 November 1923)

He was succeeded by Alexander Leslie-Melville, 10th Earl of Leven, 9th Earl of Melville (1817–1889).