Elizabeth van der Hoeven1 
From 7 September 1900, her married name became Trevelyan.
Children of Elizabeth van der Hoeven and Robert Calverley Trevelyan
- Paul Trevelyan2 b. 20 Dec 1906, d. 22 Mar 1909
- Susan Caroline Trevelyan2 b. 13 Sep 1908, d. 16 Sep 1908
- Julian Otto Trevelyan+2 b. 20 Feb 1910, d. 12 Jul 1988
Paul Trevelyan1 
Julian Otto Trevelyan1 
He was educated at Bedales School, Petersfield, Hampshire, EnglandG.1 He was educated at Trinity College, Cambridge University, Cambridge, Cambridgeshire, England.1 He gained the rank of Captain in the Royal Engineers (Camouflage.)1 He fought in the Second World War between 1940 and 1943.1 He was a painter and tutor.1 He was a tutor between 1955 and 1963 at Royal College of Art, London, EnglandG.1
Child of Julian Otto Trevelyan and Ursula Frances Elinor Darwin
- Philip Erasmus Trevelyan+2 b. 22 Aug 1943
- [S37] BP2003 volume 3, page 3936. See link for full details for this source. Hereinafter cited as. [S37]
- [S37] BP2003. [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.”
Owen Norton1 
- [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.”
Ursula Frances Elinor Darwin1 
From 30 July 1934, her married name became Trevelyan. From 1950, her married name became Mommens.4
Child of Ursula Frances Elinor Darwin and Julian Otto Trevelyan
- Philip Erasmus Trevelyan+3 b. 22 Aug 1943
- [S37] BP2003 volume 3, page 3936. See link for full details for this source. Hereinafter cited as. [S37]
- [S7549] Martin Packer, “re: Packer Family,” family provided evidence then verified by subsequent research and verification by BENR (101053), 1 May 2015. Hereinafter cited as “re: Packer Family.”
- [S37] BP2003. [S37]
- [S474] FamilySearch, online http://www.familysearch.com. Hereinafter cited as FamilySearch.
Philip Erasmus Trevelyan1
He was educated at Bryanston School, Blandford, Dorset, England.1 He was Department of Fine Arts at King’s College, Newcastle-upon-Tyne, Northumberland, EnglandG.1 He lived in 2003 at Hilltop Farm, Appleton-le-Moors, Kirkbymoorside, Yorkshire, England.1
Children of Philip Erasmus Trevelyan and Eleanor Prior
- Jack Elisha Trevelyan2 b. 1977
- Matthew Robert Trevelyan2 b. 1978
- Susannah Trevelyan2 b. 1987
Eleanor Prior1
From 1975, her married name became Trevelyan.
Children of Eleanor Prior and Philip Erasmus Trevelyan
- Jack Elisha Trevelyan2 b. 1977
- Matthew Robert Trevelyan2 b. 1978
- Susannah Trevelyan2 b. 1987
Jack Elisha Trevelyan1
Matthew Robert Trevelyan1
