Lady Rosamond Kathleen Margaret Butler1 
From 12 February 1919, her married name became Robertson. From 9 June 1925, her married name became Gibbs. She held the office of Justice of the Peace (J.P.) in 1944.1 She held the office of County Councillor for Hertfordshire between 1946 and 1962.1 She held the office of County Alderman for Hertfordshire in 1957.2
Child of Lady Rosamond Kathleen Margaret Butler and Lionel Gallwey Robertson
- Lt.-Col. Patrick Somerset Gibbs+2 b. 14 Dec 1919, d. 27 Dec 1961
Children of Lady Rosamond Kathleen Margaret Butler and Major Bryan Northam Gibbs
- Somerset Bryan Gibbs+2 b. 11 Jan 1926, d. 20 May 2021
- Brigid April Gibbs+2 b. 27 Apr 1927
- [S37] BP2003 volume 1, page 705. See link for full details for this source. Hereinafter cited as. [S37]
- [S37] BP2003. [S37]
- [S474] FamilySearch, online http://www.familysearch.com. Hereinafter cited as FamilySearch.
Arthur Robertson1
Child of Arthur Robertson
- Lionel Gallwey Robertson+2 d. 21 Jan 1926
Lionel Gallwey Robertson1 
Child of Lionel Gallwey Robertson and Lady Rosamond Kathleen Margaret Butler
- Lt.-Col. Patrick Somerset Gibbs+2 b. 14 Dec 1919, d. 27 Dec 1961
Lt.-Col. Patrick Somerset Gibbs1 
His name was legally changed to Patrick Somerset Gibbs.2 He was given the name of Patrick Somerset Robertson at birth.2 He gained the rank of Lieutenant-Colonel in the Welsh Guards.1 He lived at Hazeley House, Mortimer, Berkshire, England.2
Children of Lt.-Col. Patrick Somerset Gibbs and Mairi Zoe Evans
- Teresa Mairi Gibbs2 b. 12 Apr 1950
- Andrew Patrick Somerset Gibbs2 b. 8 Dec 1951
- David Alexander Somerset Gibbs+2 b. 21 Apr 1953, d. 1 Dec 2021
- Georgiana Rosamund Margaret Gibbs2 b. 22 Apr 1954
- Alexander Michael Somerset Gibbs2 b. 13 Jul 1958, d. 13 Mar 1988
Arthur Macmillan Evans1
Child of Arthur Macmillan Evans
Mairi Zoe Evans1
She was also known as Mairi Zoe Macmillan.3 From 1949, her married name became Gibbs.
Children of Mairi Zoe Evans and Lt.-Col. Patrick Somerset Gibbs
- Teresa Mairi Gibbs2 b. 12 Apr 1950
- Andrew Patrick Somerset Gibbs2 b. 8 Dec 1951
- David Alexander Somerset Gibbs+2 b. 21 Apr 1953, d. 1 Dec 2021
- Georgiana Rosamund Margaret Gibbs2 b. 22 Apr 1954
- Alexander Michael Somerset Gibbs2 b. 13 Jul 1958, d. 13 Mar 1988
- [S37] BP2003 volume 1, page 705. See link for full details for this source. Hereinafter cited as. [S37]
- [S37] BP2003. [S37]
- [S5587] Peggy ?, “re: Fenton Family,” family provided evidence then verified by subsequent research and verification by BENR (101053), 19 August 2011. Hereinafter cited as “re: Fenton Family.”
Andrew Patrick Somerset Gibbs1,2
He was educated at Eton College, Windsor, Berkshire, EnglandG.1
- [S37] BP2003 volume 1, page 705. See link for full details for this source. Hereinafter cited as. [S37]
- [S5872] Peter Bell, “re: Mainwaring Family,” family provided evidence then verified by subsequent research and verification by BENR (101053), 14 February 2012. Hereinafter cited as “re: Mainwaring Family.”
- [S37] BP2003. [S37]
David Alexander Somerset Gibbs1,2 
He was educated at Eton College, Windsor, Berkshire, EnglandG.1
Children of David Alexander Somerset Gibbs and Hon. Sarah Marcia Kimball
- James Patrick Gibbs3 b. 1983
- Emily Rose Gibbs3 b. 1985
- Alexandra Harriet Gibbs3 b. 1989
- [S37] BP2003 volume 1, page 705. See link for full details for this source. Hereinafter cited as. [S37]
- [S5872] Peter Bell, “re: Mainwaring Family,” family provided evidence then verified by subsequent research and verification by BENR (101053), 14 February 2012. Hereinafter cited as “re: Mainwaring Family.”
- [S37] BP2003. [S37]
- [S7786] Christopher Horne, “re: Horne Family,” family provided evidence then verified by subsequent research and verification by BENR (101053), 11 November 2015. Hereinafter cited as “re: Horne Family.”
Alexander Michael Somerset Gibbs1,2 
- [S37] BP2003 volume 1, page 705. See link for full details for this source. Hereinafter cited as. [S37]
- [S5872] Peter Bell, “re: Mainwaring Family,” family provided evidence then verified by subsequent research and verification by BENR (101053), 14 February 2012. Hereinafter cited as “re: Mainwaring Family.”
- [S37] BP2003. [S37]
Teresa Mairi Gibbs1,2
- [S37] BP2003 volume 1, page 705. See link for full details for this source. Hereinafter cited as. [S37]
- [S5872] Peter Bell, “re: Mainwaring Family,” family provided evidence then verified by subsequent research and verification by BENR (101053), 14 February 2012. Hereinafter cited as “re: Mainwaring Family.”
- [S37] BP2003. [S37]
