His wife was the poet Frances Greville,[3] daughter and coheir of James Macartney, Irish MP for Longford and Granard and his wife Catherine Coote. They eloped on 26 January 1748. They had several children, including:
^Giddlings, Tim (July 2019). "Gentlemen Commoners, 1730s". In Foster, Richard (ed.). 50 Treasures from Winchester College. SCALA. p. 104. ISBN9781785512209.
^ abBetty Rizzo, ‘Greville, Frances (1727?–1789)’, Oxford Dictionary of National Biography (Oxford University Press, September 2004; online edn, January 2008) [1], accessed 15 September 2008.
^"No. 10576". The London Gazette. 23 November 1765. p. 1. Whitehall November 23. The King has been pleased to appoint, ... Fulk Greville, Esq; Envoy Extraordinary to the Elector of Bavaria, and Minister to the Diet at Ratisbon.