The engagement was announced 31 August, 2005, between Dr. Benjamin C.T. Harper, eldest son of Dr. Peter Harper, of London, and the late Mrs Peter Harper, of Knightsbridge, London, & the Hon. Emily Moyra Cavendish (b. 1980),younger daughter of the life peer Baron Cavendish of Furness (b. 1941), of Holker Hall, Cumbria, scion of the Dukes of Devonshire, by his wife, the former Grania Mary Caulfeild (scion of the Viscounts Charlemont).
Source: The Times 31 August, 2005