Harry George William Spedding1
- [S37] BP2003 volume 1, page 441. See link for full details for this source. Hereinafter cited as. [S37]
Joanna Elizabeth Spedding1
- [S37] BP2003 volume 1, page 441. See link for full details for this source. Hereinafter cited as. [S37]
Celia Cleveland Borthwick1
- [S37] BP2003 volume 1, page 441. See link for full details for this source. Hereinafter cited as. [S37]
Brian Thomas Borthwick1 
He was educated at Eton College, Windsor, Berkshire, EnglandG.1 He fought in the Second World War.1 He gained the rank of Lieutenant in the Royal Naval Volunteer Reserve.1
Children of Brian Thomas Borthwick and Jennifer Ruth Fryer
- Simon William Frederick Borthwick+1 b. 2 Jun 1950
- Sara Marjorie Borthwick1 b. 16 Oct 1951
- Nicholas James Borthwick+1 b. 20 Sep 1953
- Charles Thomas Borthwick+1 b. 10 Dec 1955
- Timothy Michael Borthwick1 b. 17 Sep 1958
- [S37] BP2003 volume 1, page 441. See link for full details for this source. Hereinafter cited as. [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.
Simon William Frederick Borthwick1
He was educated at Eton College, Windsor, Berkshire, EnglandG.1 He lived in 2003 at 36 Kenilworth Road, London, EnglandG.1
Children of Simon William Frederick Borthwick and Bozena Podwojski
- Michael Edward Waclaw Borthwick1 b. 4 Jun 1977
- Ian Philip Miroslaw Borthwick1 b. 1979
- William Martin Stanislaw Borthwick+1 b. 1981
- Alexander Thomas Zdzislaw Borthwick1 b. 1983
- [S37] BP2003 volume 1, page 441. See link for full details for this source. Hereinafter cited as. [S37]
Bozena Podwojski1
From 1974, her married name became Borthwick.1
Children of Bozena Podwojski and Simon William Frederick Borthwick
- Michael Edward Waclaw Borthwick1 b. 4 Jun 1977
- Ian Philip Miroslaw Borthwick1 b. 1979
- William Martin Stanislaw Borthwick+1 b. 1981
- Alexander Thomas Zdzislaw Borthwick1 b. 1983
- [S37] BP2003 volume 1, page 441. See link for full details for this source. Hereinafter cited as. [S37]
Alfons Edward Podwojski1
Child of Alfons Edward Podwojski
- [S37] BP2003 volume 1, page 441. See link for full details for this source. Hereinafter cited as. [S37]
Michael Edward Waclaw Borthwick1
- [S37] BP2003 volume 1, page 441. See link for full details for this source. Hereinafter cited as. [S37]
Ian Philip Miroslaw Borthwick1
- [S37] BP2003 volume 1, page 441. See link for full details for this source. Hereinafter cited as. [S37]
William Martin Stanislaw Borthwick1
Children of William Martin Stanislaw Borthwick and Jessica M.-J. Codrington
- Bella Borthwick2
- Elizabeth Camilla Jessica Borthwick2 b. 14 Feb 2013
- [S37] BP2003 volume 1, page 441. 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.
