Lt.-Col. Edward Richard Gordon St. John1 
He fought in the Second World War.1 He gained the rank of Lieutenant-Colonel in the Royal Artillery.1
Children of Lt.-Col. Edward Richard Gordon St. John and Mary Aderyn Jones-Davies
- Catherine Aderyn St. John2 b. 9 Jun 1944
- Margaret Joan St. John2 b. 8 Jan 1949
- [S37] BP2003 volume 3, page 3485. See link for full details for this source. Hereinafter cited as. [S37]
- [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.
Reverend H. Jones-Davies1
Child of Reverend H. Jones-Davies
- Mary Aderyn Jones-Davies+2 d. 1993
Mary Aderyn Jones-Davies1 
From 15 May 1943, her married name became St. John.
Children of Mary Aderyn Jones-Davies and Lt.-Col. Edward Richard Gordon St. John
- Catherine Aderyn St. John2 b. 9 Jun 1944
- Margaret Joan St. John2 b. 8 Jan 1949
Catherine Aderyn St. John1
From 1968, her married name became Kuebart. She lived in 2003 at 463 Bochum, Plasshofstrasse, Germany.1
Friedrich Kuebart1
- [S37] BP2003 volume 3, page 3485. See link for full details for this source. Hereinafter cited as. [S37]
Margaret Joan St. John1
Margaret Joan St. John also went by the nick-name of Maggie Jo.1 From 1979, her married name became Dudley-Evans. She lived in 2003 at 19 Selwyn Road, Birmingham, Warwickshire, England.1
Tony Dudley-Evans1
- [S37] BP2003 volume 3, page 3485. See link for full details for this source. Hereinafter cited as. [S37]
Catherine Margaret St. John1
Arthur Beauchamp St. John1 
He fought in the First World War, where he was mentioned in despatches.1 He gained the rank of Commander in the Royal Navy.1
Children of Arthur Beauchamp St. John and Lucinda Mary Stanley French
- Œnone Mary St. John+2 b. 15 May 1917
- Deidre Mary St. John+2 b. 22 Nov 1919, d. 26 Apr 1996
William Henry Ashton1
Child of William Henry Ashton
- [S37] BP2003 volume 3, page 3485. See link for full details for this source. Hereinafter cited as. [S37]