Sir Daniel Derek Walker-Smith, 3rd Bt.1
He succeeded as the 3rd Baronet Walker-Smith, of Broxbourne, co. Hertford [U.K., 1960] on 9 March 2024.4
Children of Sir Daniel Derek Walker-Smith, 3rd Bt. and Dr. Hayley J. Stewart
- Alexander Jonah William Walker-Smith3 b. c Dec 2017
- Nathaniel Arthur V. Walker-Smith3 b. 2019
- [S37] BP2003 volume 3, page 4050. See link for full details for this source. Hereinafter cited as. [S37]
- [S37] BP2003. [S37]
- [S1122] Peerage News, online http://peeragenews.blogspot.co.nz/. Hereinafter cited as Peerage News.
- [S203] Announcements, The Times, London, U.K.. Hereinafter cited as The Times.
Charmian Lucinda Walker-Smith1
From 2015, her married name became Collett.3
Children of Charmian Lucinda Walker-Smith and John Sébastien Collett
- Tessa Rosemarie Collett-Smith3 b. 2016
- Romilie Deborah Collett-Smith3 b. 2019
- [S37] BP2003 volume 3, page 4050. See link for full details for this source. Hereinafter cited as. [S37]
- [S37] BP2003. [S37]
- [S1122] Peerage News, online http://peeragenews.blogspot.co.nz/. Hereinafter cited as Peerage News.
John Jonah Smith1 
He lived at Watford, Hertfordshire, England.1
Children of John Jonah Smith and Jane Elizabeth Watson
- William Sydney Smith1
- Percy Watson Smith1
- George Alfred Smith1 d. 1958
- Frederick John Smith1 d. 1941
- Jonah Smith Walker-Smith+2 b. 1 Nov 1874, d. 23 Feb 1964
William Watson1
Child of William Watson
- Jane Elizabeth Watson+2 d. 20 Nov 1928
Jane Elizabeth Watson1 
Her married name became Smith.
Children of Jane Elizabeth Watson and John Jonah Smith
- William Sydney Smith1
- Percy Watson Smith1
- George Alfred Smith1 d. 1958
- Frederick John Smith1 d. 1941
- Jonah Smith Walker-Smith+2 b. 1 Nov 1874, d. 23 Feb 1964
Jonah Smith Walker-Smith1 
He was given the name of Jonah Smith Walker Smith at birth.1 He was Controller, Housing and Town Planning Local Government Board Scotland between 1910 and 1919.1 He was Director of Housing, Ministry of Health between 1919 and 1925.1 He was registered as a Member, Institution of Mechanical Engineers (M.I.Mech.E.)1 He was registered as a Member, Institution of Civil Engineers (M.I.C.E.)1 He was appointed Fellow, Royal Institution of Chartered Surveyors (F.R.I.C.S.)1 He was admitted to Gray’s Inn in 1922 entitled to practise as a barrister.1 He was appointed Knight in 1925.1 He held the office of Member of Parliament (M.P.) for Barrow-in-Furness between 1931 and 1945.1
Children of Jonah Smith Walker-Smith and Maud Coulton Hunter
- Joan Coulton Walker-Smith2 b. 28 Feb 1906, d. 28 Feb 1961
- Coulton Walker Walker-Smith+2 b. 13 Sep 1908
- Derek Colclough Walker-Smith, Baron Broxbourne+2 b. 13 Apr 1910, d. 22 Jan 1992
Coulton Walker Hunter1
Child of Coulton Walker Hunter
- Maud Coulton Hunter+2 d. 29 Dec 1966
Maud Coulton Hunter1 
From 27 April 1905, her married name became Walker-Smith.
Children of Maud Coulton Hunter and Jonah Smith Walker-Smith
- Joan Coulton Walker-Smith2 b. 28 Feb 1906, d. 28 Feb 1961
- Coulton Walker Walker-Smith+2 b. 13 Sep 1908
- Derek Colclough Walker-Smith, Baron Broxbourne+2 b. 13 Apr 1910, d. 22 Jan 1992
Coulton Walker Walker-Smith1
Children of Coulton Walker Walker-Smith and Joan Blyth
- Michael Anthony Walker-Smith2 b. 14 Jun 1947
- Carol Louise Walker-Smith2 b. 5 Apr 1951
- Emma Jane Nicole Walker-Smith2 b. 12 Mar 1968
