Clemence Penelope Olga Welby-Everard1
From 11 May 1929, her married name became Micklethwait. She held the office of Justice of the Peace (J.P.) for Monmouthshire in 1954.1
Children of Clemence Penelope Olga Welby-Everard and Rear-Admiral St. John Aldrich Micklethwait
- Diana Micklethwait+2 b. 18 Apr 1931
- John Douglas Pelham Micklethwait+2 b. 27 Feb 1933, d. 13 Jan 2017
- Richard Micklethwait2 b. 11 Oct 1938
St. John Gore Micklethwait1
Children of St. John Gore Micklethwait
- Rear-Admiral St. John Aldrich Micklethwait+2 d. 31 Jul 1977
- Sir Robert Gore Micklethwait3 b. 7 Nov 1902, d. 8 Sep 1992
Rear-Admiral St. John Aldrich Micklethwait1 
He held the office of Deputy Lieutenant (D.L.)1 He was awarded the Distinguished Service Order (D.S.O.)1 He was appointed Companion, Order of the Bath (C.B.)1
Children of Rear-Admiral St. John Aldrich Micklethwait and Clemence Penelope Olga Welby-Everard
- Diana Micklethwait+2 b. 18 Apr 1931
- John Douglas Pelham Micklethwait+2 b. 27 Feb 1933, d. 13 Jan 2017
- Richard Micklethwait2 b. 11 Oct 1938
John Douglas Pelham Micklethwait1 
He was educated at Eton College, Windsor, Berkshire, England.1 He lived in 2003 at Latches, Ibthorpe, Hampshire, England.1
Children of John Douglas Pelham Micklethwait and Clarinda Margaret Trethowan
- John Julian Pollard Micklethwait2 b. 1 Nov 1961
- Michael St. John Micklethwait2 b. 7 Mar 1964
Lt.-Col. Michael Trethowan1
Child of Lt.-Col. Michael Trethowan
- Clarinda Margaret Trethowan+2 d. 24 Sep 1998
Clarinda Margaret Trethowan1 
From 7 February 1959, her married name became Micklethwait.
Children of Clarinda Margaret Trethowan and John Douglas Pelham Micklethwait
- John Julian Pollard Micklethwait2 b. 1 Nov 1961
- Michael St. John Micklethwait2 b. 7 Mar 1964
John Julian Pollard Micklethwait1
Laurence Isobel Raillard1
From 9 August 1996, her married name became Micklethwait.
- [S37] BP2003 volume 3, page 4111. See link for full details for this source. Hereinafter cited as. [S37]
Michael St. John Micklethwait1
Judith Anne Thacker1
From 7 August 1999, her married name became Micklethwait.
- [S37] BP2003 volume 3, page 4111. See link for full details for this source. Hereinafter cited as. [S37]