Lady Lucy Graham, daughter of the 2nd Duke of Montrose: Lady Lucy Graham, b. 28 July 1751, d. 13 February 1780 The daughter of William Graham , 2nd Duke of Montrose and Lucy Manners Graham. Lady Lucy Graham was born on 28 July 1751 at London, England. She married Archibald James Edward Douglas, 1st Baron Douglas of Douglas Castle on 13 June 1771 at St. George's Church, St., Hanover Square, London, England. Lady Lucy Graham died on 13 February 1780 at age 28.