Hilda Trevelyan1 
From 28 July 1913, her married name became Hancock.
George Thomas Trevelyan1 
- [S4567] Bill Norton, “re: Pitman Family,” family provided evidence then verified by subsequent research and verification by BENR (101053), 6 April 2010 and 19 April 2011. Hereinafter cited as “re: Pitman Family.”
Marmaduke Theakstone Hancock1 
He was appointed Fellow, Chartered Association of Certified Accountants (F.C.C.A.)1
- [S37] BP2003 volume 3, page 3934. See link for full details for this source. Hereinafter cited as. [S37]
- [S4567] Bill Norton, “re: Pitman Family,” family provided evidence then verified by subsequent research and verification by BENR (101053), 6 April 2010 and 19 April 2011. Hereinafter cited as “re: Pitman Family.”
- [S37] BP2003. [S37]
Doris Trevelyan1 
From 25 November 1925, her married name became Walker.
Henry Walker1
Child of Henry Walker
- William Henry Joshua Walker2 d. 4 Jun 1955
William Henry Joshua Walker1 
Sylvia Trevelyan1 
From 7 February 1924, her married name became Deane.
Children of Sylvia Trevelyan and Lt.-Col. Geoffrey Ronald Hawtrey Deane
- Barbara Deane2 b. 9 Dec 1924
- Elisabeth Deane+2 b. 9 Nov 1926, d. 17 Oct 2018
- Janet Anne Deane+2 b. 7 May 1929, d. 23 Jul 2004
- Charlotte Deane2 b. 5 Sep 1933
Ralph Hawtrey Deane1
Children of Ralph Hawtrey Deane
- Lt.-Col. Geoffrey Ronald Hawtrey Deane+2 d. 29 Jun 1961
- Commander Ralph Hawtrey Deane+ b. 26 May 1884, d. 30 Dec 1966
Lt.-Col. Geoffrey Ronald Hawtrey Deane1 
He gained the rank of Lieutenant-Colonel in the Royal Engineers.1 He was appointed Officer, Order of the British Empire (O.B.E.)1
Children of Lt.-Col. Geoffrey Ronald Hawtrey Deane and Sylvia Trevelyan
- Barbara Deane2 b. 9 Dec 1924
- Elisabeth Deane+2 b. 9 Nov 1926, d. 17 Oct 2018
- Janet Anne Deane+2 b. 7 May 1929, d. 23 Jul 2004
- Charlotte Deane2 b. 5 Sep 1933
Barbara Deane1