Giles Villiers Grimston1
Children of Giles Villiers Grimston and Bettina Christiansen
- Molly Rose Grimston3 b. 25 Mar 2002
- Oliver George Harbottle Grimston3 b. 15 Oct 2003
- [S37] BP2003 volume 2, page 1685. 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.
Katharine Flavia Grimston1
Sybella Jane Grimston1
Sybella Jane Grimston also went by the nick-name of Zambi.1
Hon. Rosemary Sybella Violet Grimston1 
From 10 February 1953, her married name became Underdown.1 From 29 March 1984, her married name became Rowse.1 She lived in 2003 at 75B Flood Street, London, EnglandG.1
Harry Charles Baillie Underdown1 
He held the office of Justice of the Peace (J.P.)1
Child of Harry Charles Baillie Underdown and Rachel Elizabeth Orr
- Charles Edward Underdown3 b. 1908, d. 1989
- [S37] BP2003 volume 2, page 1685. 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.
- [S37] BP2003. [S37]
Charles Edward Underdown1 
He was an actor and former jockey.1 Charles Edward Underdown usually went by his middle name of Edward.1
- [S37] BP2003 volume 2, page 1685. 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.
- [S37] BP2003. [S37]
Hon. Ella Zia Grimston1
From 12 January 1972, her married name became Humphreys.
Child of Hon. Ella Zia Grimston and Humphrey K. Humphreys
- Catherine Sybella Humphreys2 b. 25 Mar 1977
Professor H. F. Humphreys1
Child of Professor H. F. Humphreys
- Humphrey K. Humphreys+2 d. 1984
Humphrey K. Humphreys1 
Child of Humphrey K. Humphreys and Hon. Ella Zia Grimston
- Catherine Sybella Humphreys2 b. 25 Mar 1977
Catherine Sybella Humphreys1