Dorothy Donovan1
From 1928, her married name became Hordern.1
Children of Dorothy Donovan and Charles Hubert Hordern
- Rt. Hon. Sir Peter Maudslay Hordern+1 b. Apr 1929
- Celia Mary Hordern1 b. Aug 1930
- Christopher Nicholas Hugh Hordern1 b. Feb 1934
- [S40] L. G. Pine, editor, Burke’s Genealogical and Heraldic History of the Landed Gentry, 17th edition, (London, England: Burke’s Peerage Ltd, 1952), page 1283. Hereinafter cited as Burke’s Landed Gentry, 17th ed.
John Abraham Rodolph Gaulis1
Child of John Abraham Rodolph Gaulis
- Albertina Marianna Gaulis+2 d. 7 Feb 1798
Albertina Marianna Gaulis1 
From 28 April 1786, her married name became Trefusis.
Children of Albertina Marianna Gaulis and Robert George William Trefusis, 17th Lord Clinton
- Hon. Anne Matilda Trefusis+2 d. 24 Feb 1876
- Hon. Caroline Trefusis4 d. c 18 Feb 1798
- Colonel Robert Cotton St. John Trefusis, 18th Lord Clinton2 b. 28 Apr 1787, d. Oct 1832
- Marianne Coventry Trefusis4 b. 31 May 1789
- Charles Rodolph Trefusis, 19th Lord Clinton+2 b. 9 Nov 1791, d. 10 Apr 1866
- Captain Hon. George Rolle Walpole Trefusis+2 b. 8 Apr 1793, d. May 1849
- Hon. Louisa Trefusis2 b. 29 Nov 1796, d. 20 Nov 1885
- [S37] BP2003 volume 1, page 825. See link for full details for this source. Hereinafter cited as. [S37]
- [S37] BP2003. [S37]
- [S6] G.E. Cokayne; with Vicary Gibbs, H.A. Doubleday, Geoffrey H. White, Duncan Warrand and Lord Howard de Walden, editors, The Complete Peerage of England, Scotland, Ireland, Great Britain and the United Kingdom, Extant, Extinct or Dormant, new ed., 13 volumes in 14 (1910-1959; reprint in 6 volumes, Gloucester, U.K.: Alan Sutton Publishing, 2000), volume III, page 322. Hereinafter cited as The Complete Peerage.
- [S988] Cornwall OPC Database, online http://www.cornwall-opc-database.org/. Hereinafter cited as Cornwall OPC Database.
Colonel Robert Cotton St. John Trefusis, 18th Lord Clinton1 
He was educated at Harrow School, Harrow, London, EnglandG.1 He succeeded as the 18th Lord Clinton [E., 1299] on 28 August 1797.1 He was educated in 1802 at Eton College, Windsor, Berkshire, EnglandG.4 He was commissioned in 1803, in the service of the British Army.2 He gained the rank of Captain in the 16th Light Dragoons.1 He was Aide-de-Camp to the Duke of Wellington.1 He fought in the Peninsular Wars.1 He gained the rank of Colonel in 1825.1
- [S37] BP2003 volume 1, page 825. See link for full details for this source. Hereinafter cited as. [S37]
- [S6] G.E. Cokayne; with Vicary Gibbs, H.A. Doubleday, Geoffrey H. White, Duncan Warrand and Lord Howard de Walden, editors, The Complete Peerage of England, Scotland, Ireland, Great Britain and the United Kingdom, Extant, Extinct or Dormant, new ed., 13 volumes in 14 (1910-1959; reprint in 6 volumes, Gloucester, U.K.: Alan Sutton Publishing, 2000), volume III, page 322. Hereinafter cited as The Complete Peerage.
- [S37] BP2003. [S37]
- [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 191. Hereinafter cited as The Complete Peerage, Volume XIV.
Timothy Donovan1
Child of Timothy Donovan
- [S40] L. G. Pine, editor, Burke’s Genealogical and Heraldic History of the Landed Gentry, 17th edition, (London, England: Burke’s Peerage Ltd, 1952), page 1283. Hereinafter cited as Burke’s Landed Gentry, 17th ed.
Rt. Hon. Sir Peter Maudslay Hordern1
He was educated at Geelong Grammer School, Geelong, Victoria, AustraliaG.3 He was educated at Christ Church, Oxford University, Oxford, Oxfordshire, EnglandG.3 He held the office of Member of Parliament (M.P.) for Horsham between 1964 and 1974.2,4 He was a director of Petrofina UK plc in 1973.3 He held the office of Member of Parliament (M.P.) for Horsham and Cralwey between 1974 and 1983.4 He held the office of Member of Parliament (M.P.) for Horsham between 1983 and 1997.4 He was appointed Privy Counsellor (P.C.) in 1993.3 He held the office of Deputy Lieutenant (D.L.) of West Sussex.3
Children of Rt. Hon. Sir Peter Maudslay Hordern and Elizabeth Susan Chataway
- Andrew Charles Hugh Hordern3 b. 1965, d. 25 Nov 2009
- James Peter Hordern+2 b. 1967
- Dr. Sara Victoria Margaret Hordern+5 b. 1971
- [S40] L. G. Pine, editor, Burke’s Genealogical and Heraldic History of the Landed Gentry, 17th edition, (London, England: Burke’s Peerage Ltd, 1952), page 1283. Hereinafter cited as Burke’s Landed Gentry, 17th ed.
- [S37] BP2003 volume 3, page 3458. See link for full details for this source. Hereinafter cited as. [S37]
- [S130] Wikipedia, online http;//www.wikipedia.org. Hereinafter cited as Wikipedia.
- [S1122] Peerage News, online http://peeragenews.blogspot.co.nz/. Hereinafter cited as Peerage News.
- [S466] Notices, The Telegraph, London, UK, 23 March 2006. Hereinafter cited as The Telegraph.
Captain Hon. George Rolle Walpole Trefusis1 
He gained the rank of Captain in the Royal Navy.1
Children of Captain Hon. George Rolle Walpole Trefusis and Margaret Frances James
- George Rodolph Trefusis2 b. 22 Oct 1840, d. 10 May 1867
- Rt. Rev. Robert Edward Trefusis+2 b. 24 Jan 1843, d. 9 Jul 1930
- Fanny Albertina Trefusis3 b. c 1845
John James1 
He lived at Houghton Lodge, Hampshire, EnglandG.1
Children of John James and Mary Wilson
- Margaret Frances James+3 d. 6 Mar 1848
- Elizabeth Alethea James2
Margaret Frances James1 
From 8 January 1839, her married name became Trefusis.
Children of Margaret Frances James and Captain Hon. George Rolle Walpole Trefusis
- George Rodolph Trefusis2 b. 22 Oct 1840, d. 10 May 1867
- Rt. Rev. Robert Edward Trefusis+2 b. 24 Jan 1843, d. 9 Jul 1930
- Fanny Albertina Trefusis4 b. c 1845
- [S37] BP2003 volume 1, page 825. See link for full details for this source. Hereinafter cited as. [S37]
- [S37] BP2003. [S37]
- [S35] BLG1965 volume 1, page 575. See link for full details for this source. Hereinafter cited as. [S35]
- [S1750] Deirdre Robinson, “re: Baron Swansea,” e-mail message to BENR, 28 May 2006. Hereinafter cited as “re: Baron Swansea.”
George Rodolph Trefusis1 
He gained the rank of Lieutenant in the Royal Navy.1