Lyon, John, 4th Earl of Strathmore (1663 -1712)
John Lyon, born 8 May 1663, was the eldest son of Patrick 3rd Earl of Strathmore and Kinghorne, and Helen Middleton, daughter of John, 1st Earl of Middleton. He succeeded his father as 4th Earl of Strathmore in 1695, and married 21 September 1691, Elizabeth Stanhope, daughter of the 2nd Earl of Chesterfield. He died 10 May 1712. Some books from the Library of the Earls of Strathmore were included in a mixed sale at Sotheby's 14 November 1922, and more including deeds and documents, in a sale of 28 March 1923.