On 23 February 1721, he married Mary Erskine, a daughter of Col. Hon. John Erskine of Carnock (third son of
David Erskine, 2nd Lord Cardross) and Anna Dundas (daughter and co-heiress of William Dundas of Kincavel). Before her death in 1723, they had one child: •
David Leslie, 6th Earl of Leven (1722–1802), who married Wilhelmina Nisbet, daughter of William Nisbet. After the death of his first wife in 1723, he married Elizabeth Monypenny, a daughter of Alexander Moneypenny of
Pitmilly, on 13 March 1726. They had four children: •
Alexander Leslie (1731–1794), a
Major-general in the
British Army who married Mary Tullidelph, a daughter of Dr. Walter Tullidelph of Tullidelph, in 1760. •
Lady Anne Leslie (1730–1779), who married
George Carnegie, 6th Earl of Northesk. •
Lady Mary Leslie (1736–1821), a novelist who married Dr. James Walker in 1762. After his death, she married George Robinson Hamilton. •
Lady Elizabeth Leslie (1737–1788), who married
John Hope, 2nd Earl of Hopetoun Lord Leven and Melville died on 2 September 1754 and was succeeded in his titles by his eldest son,
David. ==References==