Hon. John Fermor-Hesketh1 
He was educated at Ampleforth College, Ampleforth, Yorkshire, EnglandG.1 He lived in 2003 at 53 Old Church Street, London, EnglandG.1
Child of Hon. John Fermor-Hesketh and Helena Marian Hunt
- Alice Mary Louisa Fermor-Hesketh1 b. 5 Mar 1987
Hon. Claire Georgina Watson1
Her married name became Fermor-Hesketh. She lived in 2003 at Easton Neston, Towcester, Northamptonshire, EnglandG.2
Children of Hon. Claire Georgina Watson and Thomas Alexander Fermor-Hesketh, 3rd Baron Hesketh
- Hon. Flora Mary Fermor-Hesketh3 b. 1981
- Hon. Sophia Christian Fermor-Hesketh3 b. 1984
- Hon. Frederick Hatton Fermor-Hesketh1 b. 13 Oct 1988
- [S2] Peter W. Hammond, editor, The Complete Peerage or a History of the House of Lords and All its Members From the Earliest Times, Volume XIV: Addenda & Corrigenda (Stroud, Gloucestershire, U.K.: Sutton Publishing, 1998), page 721. Hereinafter cited as The Complete Peerage, Volume XIV.
- [S37] BP2003 volume 2, page 2601. See link for full details for this source. Hereinafter cited as. [S37]
- [S37] BP2003. [S37]
Jeanne McDowell1
Her married name became Fermor-Hesketh. She lived in 2003 at 70 Drayton Gardens, London, EnglandG.1
Child of Jeanne McDowell and Hon. Robert Fermor-Hesketh
- [S37] BP2003 volume 2, page 1894. See link for full details for this source. Hereinafter cited as. [S37]
Blaise Isambard Robert Fermor-Hesketh1
- [S37] BP2003 volume 2, page 1894. See link for full details for this source. Hereinafter cited as. [S37]
Philip Simon Prospero Lindley Rupert Yorke, Viscount Royston1 
Philip Simon Prospero Lindley Rupert Yorke, Viscount Royston also went by the nick-name of Pips.1 He was styled as Viscount Royston.1 He was educated at Eton College, Windsor, Berkshire, EnglandG.1
Children of Philip Simon Prospero Lindley Rupert Yorke, Viscount Royston and Virginia Anne Lyon
- Lady Jemima Rose Yorke2 b. 17 May 1969
- Joseph Philip Sebastion Yorke, 10th Earl of Hardwicke+2 b. 3 Feb 1971
Lady Victoria Mary Verenia Braganca Yorke 
From 17 September 1976, her married name became Waymouth. She was an interior decorator.1 She lived in 2003 at 36 Elms Road, London, EnglandG.1
Children of Lady Victoria Mary Verenia Braganca Yorke and Nigel Waymouth
- Louis Alexander Philip Waymouth+2 b. 14 Apr 1978
- Adam Django Joseph Waymouth2 b. 1981
Lady Rose Mary Sydney Yorke1
From before 1981, her married name became Delbray. From 1981, her married name became Vaughan.1 From 1990, her married name became Turner.1
Child of Lady Rose Mary Sydney Yorke and David Thompson
Virginia Anne Lyon1 
Children of Virginia Anne Lyon and Philip Simon Prospero Lindley Rupert Yorke, Viscount Royston
- Lady Jemima Rose Yorke2 b. 17 May 1969
- Joseph Philip Sebastion Yorke, 10th Earl of Hardwicke+2 b. 3 Feb 1971
Joseph Philip Sebastion Yorke, 10th Earl of Hardwicke1
He succeeded as the 10th Baron Hardwicke, of Hardwicke, co. Gloucester [G.B., 1733] on 31 December 1974.2 He succeeded as the 10th Earl of Hardwicke [G.B., 1754] on 31 December 1974.2 He succeeded as the 10th Viscount Royston, co. Cambridge [G.B., 1754] on 31 December 1974.2 He was educated at Marlborough College, Marlborough, Wiltshire, EnglandG.2 He lived in 2003 at 12 Lansdowne Road, London, EnglandG.2
Child of Joseph Philip Sebastion Yorke, 10th Earl of Hardwicke and Siobhan Loftus
- Philip Alexander Joseph Yorke, Viscount Royston3 b. 3 Dec 2009
Lady Jemima Rose Yorke1
She was she was granted the rank of an earl’s daughter in 1977.1