Sir Geoffrey Washington Trevelyan, 5th Bt.1 
He was educated at Oundle School, Oundle, Northamptonshire, England.1 He graduated from Trinity College, Cambridge University, Cambridge, Cambridgeshire, England, with a Master of Arts (M.A.)1 He was director of Chatto and Windus Ltd, Chatto and Windus (Educnl) Ltd, The Hogarth Press Ltd, Chatto and Jonathan Cape Ltd, and Consolidated Scientific Instruments Ltd.1 He succeeded as the 5th Baronet Trevelyan, of Wallington, Northumberland [U.K., 1874] on 7 February 1996.2 He lived in 2003 at Lower Silkstead, 3 Abbey Mill End, St. Albans, Hertfordshire, England.1
Children of Sir Geoffrey Washington Trevelyan, 5th Bt. and Gillian Isabel Wood
- Sir Peter John Trevelyan, 6th Bt.+2 b. 11 Sep 1948
- Sandra Mary Trevelyan+2 b. 5 Aug 1951
- [S37] BP2003 volume 3, page 3935. 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.
Alexander Louis Sandison Wood1
Child of Alexander Louis Sandison Wood
- Gillian Isabel Wood+2 d. 4 Dec 2000
Gillian Isabel Wood1 
From 3 May 1947, her married name became Trevelyan.
Children of Gillian Isabel Wood and Sir Geoffrey Washington Trevelyan, 5th Bt.
- Sir Peter John Trevelyan, 6th Bt.+2 b. 11 Sep 1948
- Sandra Mary Trevelyan+2 b. 5 Aug 1951
Sir Peter John Trevelyan, 6th Bt.1
He was educated at Oundle School, Oundle, Northamptonshire, England.1 He was educated at Trinity College, Cambridge University, Cambridge, Cambridgeshire, England.1 He succeeded as the 6th Baronet Trevelyan, of Wallington, Northumberland [U.K., 1874] on 28 January 2011.
Child of Sir Peter John Trevelyan, 6th Bt. and Diane Terry
- Julian Miles Trevelyan2 b. 29 Oct 1998
Diane Terry1
From 1996, her married name became Trevelyan.
Child of Diane Terry and Sir Peter John Trevelyan, 6th Bt.
- Julian Miles Trevelyan2 b. 29 Oct 1998
Julian Miles Trevelyan1
Sandra Mary Trevelyan1
She was educated at Badminton School, Westbury-on-Trym, Bristol, EnglandG.1 She was educated at Newcastle University, Newcastle-upon-Tyne, Northumberland, England.1 From 1974, her married name became Bradley.
Children of Sandra Mary Trevelyan and David Bradley
- Robert Bradley2 b. 1980
- James Bradley2 b. 1982
David Bradley1
Children of David Bradley and Sandra Mary Trevelyan
- Robert Bradley2 b. 1980
- James Bradley2 b. 1982