St. Andrew St. John1 
He gained the rank of Lieutenant in the Royal Engineers.1
Lavinia Barbara St. John1 
From 15 November 1843, her married name became Wynne.
John James Wynne1
RM.1
- [S37] BP2003 volume 3, page 3489. See link for full details for this source. Hereinafter cited as. [S37]
Laura St. John1
From 11 September 1844, her married name became Moschzisker.
Francis Adolphus Moschzisker1
- [S37] BP2003 volume 3, page 3489. See link for full details for this source. Hereinafter cited as. [S37]
Jane St. John1
From 28 October 1849, her married name became Walker.
Samuel Arthur Walker1 
- [S37] BP2003 volume 3, page 3489. See link for full details for this source. Hereinafter cited as. [S37]
Eliza St. John1 
From 1858, her married name became Rich. From 1 April 1875, her married name became Dowman.1 From 1882, her married name became Walker.1
Reverend Lionel Rich1 
- [S37] BP2003 volume 3, page 3489. See link for full details for this source. Hereinafter cited as. [S37]
Penelope Ann Wyldbore-Smith1,2
From 18 October 1973, her married name became Herdman.2
Children of Penelope Ann Wyldbore-Smith and James Emerson Herdman
- Katherine Louise Herdman2 b. 1977
- Emerson John Herdman2 b. 1979