Alastair John Morrison, 3rd Baron Margadale DL (born 4 April 1958) is a British peer. Margadale is the son of James Morrison, 2nd Baron Margadale, and Clare Barclay. He married, firstly, Lady Sophia Cavendish (formerly Murphy), daughter of Andrew Cavendish, 11th Duke of Devonshire, and his wife, the Hon. , on 19 July 1988. They have two children: *The Honourable Declan James Morrison (born 11 July 1993). He was engaged to Maria de Los Milagros Prado, of Buenos Aires as of 22 October 2019. *The Honourable Nancy Lorna Sophie Morrison (born 22 January 1995). He married, secondly, Amanda Fuller (formerly Wace), daughter of Michael Fuller, on 2 September 1999. He succeeded his father in the barony on 6 April 2003 and the same year was appointed a Deputy Lieutenant for Wiltshire. Arms