Brigadier Denys Edward Osbert Thackwell1 
He gained the rank of Brigadier in the Royal Engineers.1 He was appointed Commander, Order of the British Empire (C.B.E.)1 He was president of the International Geographical Association between 1964 and 1968.1
Children of Brigadier Denys Edward Osbert Thackwell and Patricia Mary Talbot
- Sara Charlotte Thackwell+1 b. 8 May 1938
- Catherine Patricia Thackwell+1 b. 20 Sep 1939
- Major William Talbot Roche Thackwell+1 b. 21 Feb 1947
- [S37] BP2003 volume 3, page 3607. See link for full details for this source. Hereinafter cited as. [S37]
Brig.-Gen. Osbert Montague Roche Thackwell1 
He gained the rank of Brigadier-General in the Royal Engineers.1
Child of Brig.-Gen. Osbert Montague Roche Thackwell
- [S37] BP2003 volume 3, page 3607. 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.”
Major William Talbot Roche Thackwell1
He was educated at Sherborne School, Sherborne, Dorset, England.1 He was educated at Royal Military Academy, Sandhurst, Berkshire, England.1 He gained the rank of Major in the Royal Engineers.1 He lived in 2003 at 273 Bexley Road, Maidstone, Kent, England.1
Children of Major William Talbot Roche Thackwell and Jodie Elizabeth Day
- Sarah Patricia Thackwell2 b. 16 Sep 1977
- Clare Frances Thackwell2 b. 13 Sep 1979
- Edward John Roche Thackwell2 b. 24 Jun 1981
- Mark Anthony Thackwell2 b. 16 May 1987
Sara Charlotte Thackwell1
Her married name became Turnbull. She lived in 2003 at Thornhill, Holt, Dorset, England.1
Children of Sara Charlotte Thackwell and Captain John Grey Turnbull
- Elizabeth Frances Turnbull1 b. 12 Jul 1960
- Mark Robert Turnbull1 b. 8 Oct 1961
- Christopher John Turnbull1 b. 9 Jul 1963
- Anthony Lawrence Turnbull1 b. 27 Mar 1965
- Alison Jane Turnbull+1 b. 8 May 1967
- [S37] BP2003 volume 3, page 3607. See link for full details for this source. Hereinafter cited as. [S37]
Captain John Grey Turnbull1
He was educated at Marlborough College, Marlborough, Wiltshire, England.2 He gained the rank of Captain in the Royal Artillery.1
Children of Captain John Grey Turnbull and Sara Charlotte Thackwell
- Elizabeth Frances Turnbull1 b. 12 Jul 1960
- Mark Robert Turnbull1 b. 8 Oct 1961
- Christopher John Turnbull1 b. 9 Jul 1963
- Anthony Lawrence Turnbull1 b. 27 Mar 1965
- Alison Jane Turnbull+1 b. 8 May 1967
Reverend Peveril Hayes Turnbull1
He was Rector at Melton, Woodbridge, Suffolk, England.2 He lived at The Cottage, Brandeston, Woodbridge, Suffolk, EnglandG.1
Children of Reverend Peveril Hayes Turnbull and Lady Jane Grey
- Captain John Grey Turnbull+3 b. 4 Oct 1928
- Marjorie Turnbull+2 b. 6 Apr 1932
- Oliver Turnbull+3 b. 8 Aug 1933, d. May 2002
Lady Jane Grey1,2 
Her married name became Turnbull.
Children of Lady Jane Grey and Reverend Peveril Hayes Turnbull
- Captain John Grey Turnbull+1 b. 4 Oct 1928
- Marjorie Turnbull+2 b. 6 Apr 1932
- Oliver Turnbull+2 b. 8 Aug 1933, d. May 2002
William Grey, 9th Earl of Stamford1 
He was educated at Bradfield College, Reading, Berkshire, England.1 He graduated from Exeter College, Oxford University, Oxford, Oxfordshire, England, with a Master of Arts (M.A.)1 He held the office of Justice of the Peace (J.P.) for Cheshire.1 He succeeded as the 9th Earl of Stamford [E., 1628] on 19 June 1890.1 He succeeded as the 10th Baron Grey, of Groby, co. Leicester [E., 1603] on 19 June 1890.1
Children of William Grey, 9th Earl of Stamford and Elizabeth Louisa Penelope Theobald
- Roger Grey, 10th Earl of Stamford1 b. 27 Oct 1896, d. 18 Aug 1976
- Lady Jane Grey+1 b. 24 Aug 1899
William Peveril Turnbull1
Child of William Peveril Turnbull
- [S34] BP1970 page 2516. See link for full details for this source. Hereinafter cited as. [S34]
Mark Robert Turnbull1
- [S37] BP2003 volume 3, page 3607. See link for full details for this source. Hereinafter cited as. [S37]