Isabel Gertrude Bell1 
From 14 July 1898, her married name became Guinness.
Children of Isabel Gertrude Bell and Eustace Guinness
- Eustace Francis Guinness2 b. 21 Jan 1900
- Colonel Humphrey Patrick Guinness2 b. 24 Mar 1902, d. 10 Feb 1986
Eustace Francis Guinness1
He was educated at Trinity College, Dublin University, Dublin, County Dublin, IrelandG.1 He was educated at New College, Oxford University, Oxford, Oxfordshire, EnglandG.1 He gained the rank of officer in the Irish Guards.1 He was a senior partner of Escombe, Campbell & Company, stockbrokers.1 He lived in 1976 at Rosemoor Street, London, England.3
Colonel Humphrey Patrick Guinness1 
He was educated at Eton College, Windsor, Berkshire, EnglandG.1 He was educated at Royal Military College, Sandhurst, Berkshire, EnglandG.1 He fought in the Second World War.1 He gained the rank of Colonel in the Royal Scots Greys.1 He lived in 1976 at Badminton, Gloucestershire, England.2
- [S37] BP2003 volume 2, page 1696. See link for full details for this source. Hereinafter cited as. [S37]
- [S47] BIFR1976 page 529. See link for full details for this source. Hereinafter cited as. [S47]
- [S37] BP2003. [S37]
- [S266] World War II Unit Histories – Officers, online http://www.unithistories.com/units_index/default.asp?file=../officers/personsx. Hereinafter cited as World War II Unit Histories – Officers.
Major William Edward Gatacre1 
He lived at de Wiersee, Vorden, The Netherlands.3 He fought in the Boer War between 1899 and 1900.2 He fought in the First World War between 1914 and 1918, where he became a POW in Germany.2 He gained the rank of Major in the King’s Own Yorkshire Light Infantry.1
Children of Major William Edward Gatacre and Mary Margaret Kennedy
- Gladys Ellen Gatacre3 b. 1909, d. 1993
- Diana Mary Gatacre+3 b. 1914, d. 24 Jun 2006
Child of Major William Edward Gatacre and Alice Julie Hortense Jacqueline Aurélie de Stuers
- Edward Victor Gatacre+4 b. 2 Mar 1928, d. 3 May 2020
- [S37] BP2003 volume 2, page 1696. See link for full details for this source. Hereinafter cited as. [S37]
- [S35] BLG1965 volume 3, page 365. See link for full details for this source. Hereinafter cited as. [S35]
- [S37] BP2003. [S37]
- [S7177] Bob Janes, “re: Bosanquet Family,” family provided evidence then verified by subsequent research and verification by BENR (101053), 27 June 2014. Hereinafter cited as “re: Bosanquet Family.”
Gladys Ellen Gatacre1 
From 21 March 1930, her married name became Denison.1 From 16 July 1946, her married name became Guinness.
- [S37] BP2003 volume 2, page 1696. See link for full details for this source. Hereinafter cited as. [S37]
- [S7177] Bob Janes, “re: Bosanquet Family,” family provided evidence then verified by subsequent research and verification by BENR (101053), 27 June 2014. Hereinafter cited as “re: Bosanquet Family.”
- [S37] BP2003. [S37]
- [S35] BLG1965 volume 3, page 365. See link for full details for this source. Hereinafter cited as. [S35]
Howard Rundell Guinness1 
He was a partner of Guinness Mahon.1 He lived at Clandon Regis, West Clandon, Surrey, EnglandG.1
Children of Howard Rundell Guinness and Mary Alice Guinness
- Henry Samuel Howard Guinness+3 b. 22 Jun 1888, d. 10 Apr 1975
- Captain Edward Douglas Guinness+3 b. 19 Apr 1893, d. 29 Mar 1983
- Sir Arthur Rundell Guinness+3 b. 26 May 1895, d. 12 Mar 1951
- Frederick Roberts Guinness+3 b. 23 Apr 1900, d. 1979
- Brian Cecil Guinness+3 b. 10 Jul 1903
Mary Alice Guinness1 
Mary Alice Guinness also went by the nick-name of May.1
Children of Mary Alice Guinness and Howard Rundell Guinness
- Henry Samuel Howard Guinness+2 b. 22 Jun 1888, d. 10 Apr 1975
- Captain Edward Douglas Guinness+2 b. 19 Apr 1893, d. 29 Mar 1983
- Sir Arthur Rundell Guinness+2 b. 26 May 1895, d. 12 Mar 1951
- Frederick Roberts Guinness+2 b. 23 Apr 1900, d. 1979
- Brian Cecil Guinness+2 b. 10 Jul 1903
Henry Samuel Howard Guinness1 
Henry Samuel Howard Guinness usually went by his middle name of Samuel.1 2nd dau of Otto Christian Holter, of Christiania, Norway.2 He was educated at Winchester College, Winchester, Hampshire, EnglandG.1 He graduated from Balliol College, Oxford University, Oxford, Oxfordshire, EnglandG, in 1909 with a Bachelor of Arts (B.A.)1 He was a director of the Provincial Bank of Ireland in 1918.1 Between 1919 and 1920 hon Fin Advr FO.2 Between 1923 and 1971 merchant bankers.2 He was a partner of Guinness Mahon, merchant bankers between 1923 and 1971.1 He was a director of the National Discount Company in 1926.1 Between 1937 and 1968 sr partner.2 He was awarded the Chevalier, Order of Olav of Norway in 1947.1 He was a director of Electro Trust and Viking Tanker (later merged with Guinness Mahon to form Guinness Mahon Holdings) in 1953.1
Children of Henry Samuel Howard Guinness and Alfhild Holter
- George Francis Howard Guinness3 b. 4 May 1915, d. 7 Aug 1930
- Helga Mary Guinness+3 b. 30 Sep 1916
- Marit Victoria Guinness+3 b. 28 Jan 1919, d. 27 Sep 2004
- Ingrid Louise Guinness+3 b. 12 Aug 1922
Otto Christian Holter1
Child of Otto Christian Holter
- Alfhild Holter+2 d. 1983
Alfhild Holter1 
From 8 October 1913, her married name became Guinness. She was awarded the Chevalier, Order of Olav of Norway in 1947.1
Children of Alfhild Holter and Henry Samuel Howard Guinness
- George Francis Howard Guinness2 b. 4 May 1915, d. 7 Aug 1930
- Helga Mary Guinness+2 b. 30 Sep 1916
- Marit Victoria Guinness+2 b. 28 Jan 1919, d. 27 Sep 2004
- Ingrid Louise Guinness+2 b. 12 Aug 1922
