Donna Isabella della Pura Onorati1
Child of Donna Isabella della Pura Onorati and Colonel unknown Renzo
- [S37] BP2003 volume 2, page 1695. See link for full details for this source. Hereinafter cited as. [S37]
Air Marshal Sir John Cotesworth Slessor1 
Air Marshal Sir John Cotesworth Slessor was the son of Major Arthur Kerr Slessor.3 He married, firstly, Hermione Grace Guinness, daughter of Gerald Seymour Guinness and Eleanor Grace de Capell Brooke, on 8 May 1923.1 He was also reported to have been married on 18 May 1923.4 He died in 1979.1
He was awarded the Distinguished Service Order (D.S.O.)1 He was awarded the Military Cross (M.C.)1 He held the office of Deputy Lieutenant (D.L.)1 He was appointed Knight Grand Cross, Order of the Bath (G.C.B.)1 He gained the rank of Marshal of the Royal Air Force.1
Children of Air Marshal Sir John Cotesworth Slessor and Hermione Grace Guinness
- Juliet Hermione Slessor+1 b. c 1924, d. 20 Dec 2019
- G/Capt. John Arthur Guinness Slessor+1 b. 14 Aug 1925, d. 11 Mar 2008
- [S37] BP2003 volume 2, page 1695. See link for full details for this source. Hereinafter cited as. [S37]
- [S130] Wikipedia, online http;//www.wikipedia.org. Hereinafter cited as Wikipedia.
- [S6448] Bram Sonneveld, “re: Oppenheimer Family,” family provided evidence then verified by subsequent research and verification by BENR (101053), 27 November 2012. Hereinafter cited as “re: Oppenheimer Family.”
- [S47] BIFR1976 page 531. See link for full details for this source. Hereinafter cited as. [S47]
unknown daughter Carter1
- [S37] BP2003 volume 2, page 1695. See link for full details for this source. Hereinafter cited as. [S37]
Juliet Hermione Slessor1 
Her married name became de Laszlo.2 Her married name became Price.2
Child of Juliet Hermione Slessor and Lt.-Col. Kenrick Jack Price
- [S37] BP2003 volume 2, page 1695. See link for full details for this source. Hereinafter cited as. [S37]
- [S466] Notices, The Telegraph, London, UK. Hereinafter cited as The Telegraph.
- [S1122] Peerage News, online http://peeragenews.blogspot.co.nz/. Hereinafter cited as Peerage News.
unknown daughter Rawlins1
- [S37] BP2003 volume 2, page 1695. See link for full details for this source. Hereinafter cited as. [S37]
Luis Guevara1
Child of Luis Guevara and Ida Reimers
- Alvaro Guevara1 d. 11 Oct 1951
- [S37] BP2003 volume 2, page 1696. See link for full details for this source. Hereinafter cited as. [S37]
Judith A. Howard1
From 1968, her married name became March Phillipps de Lisle.1
- [S37] BP2003 volume 2, page 1695. See link for full details for this source. Hereinafter cited as. [S37]
Ida Reimers1
Child of Ida Reimers and Luis Guevara
- Alvaro Guevara1 d. 11 Oct 1951
- [S37] BP2003 volume 2, page 1696. See link for full details for this source. Hereinafter cited as. [S37]
Captain Charles Weimar1
Child of Captain Charles Weimar
- [S37] BP2003 volume 2, page 1696. See link for full details for this source. Hereinafter cited as. [S37]
Beatrice Mackay1
From 1900, her married name became Jungman.1 From after 1918, her married name became Guinness.1
Children of Beatrice Mackay and Nico Jungman
- Zita Jungman1 d. 18 Feb 2006
- Teresa Jungman1
- [S37] BP2003 volume 2, page 1696. See link for full details for this source. Hereinafter cited as. [S37]
- [S1122] Peerage News, online http://peeragenews.blogspot.co.nz/. Hereinafter cited as Peerage News.
