Lydia Dorothy Muriel Pike1
From 22 April 1908, her married name became Gordon-Duff.1 From 9 February 1926, her married name became Waller.2
Children of Lydia Dorothy Muriel Pike and Captain Lachlan Gordon-Duff
- Frances Pauline Gordon-Duff+1 b. 5 Mar 1909
- Lt.-Col. Thomas Robert Gordon-Duff, 10th of Drummuir and 12th of Park+1 b. 5 Oct 1911, d. 4 May 1997
- Major Lachlan Cecil Gordon-Duff+1 b. 23 Nov 1914, d. 6 Jan 2005
- [S526] Sir Bernard Burke, editor, Burke’s Genealogical and Heraldic History of the Landed Gentry, 13th edition, (London, England: Burke Publishing Co, 1921), page 529. Hereinafter cited as Burke’s Landed Gentry, 13th ed.
- [S35] BLG1965 volume 1, page 216. See link for full details for this source. Hereinafter cited as. [S35]
Lt.-Col. Thomas Robert Gordon-Duff, 10th of Drummuir and 12th of Park1 
He was educated at Eton College, Windsor, Berkshire, England.2 He was educated at Royal Military College, Sandhurst, Berkshire, England.2 He gained the rank of officer in the Rifle Brigade.2 He fought in the Second World War.2 He was awarded the Military Cross (M.C.) in 1945.2 He gained the rank of Lieutenant-Colonel in 1947 in the Gordon Highlanders.2 He held the office of Deputy Lieutenant (D.L.) between 1948 and 1964.2 He held the office of Justice of the Peace (J.P.) for Banffshire in 1959.2 He held the office of Lord-Lieutenant of Banffshire in 1964.2
Child of Lt.-Col. Thomas Robert Gordon-Duff, 10th of Drummuir and 12th of Park and Jean Moir
- Lachlan Alexander Gordon-Duff2 b. 2 Jun 1951
- [S526] Sir Bernard Burke, editor, Burke’s Genealogical and Heraldic History of the Landed Gentry, 13th edition, (London, England: Burke Publishing Co, 1921), page 529. Hereinafter cited as Burke’s Landed Gentry, 13th ed.
- [S35] BLG1965 volume 1, page 215. See link for full details for this source. Hereinafter cited as. [S35]
- [S266] World War II Unit Histories – Officers, online http://www.unithistories.com/units_index/default.asp?file=../officers/personsx. Hereinafter cited as World War II Unit Histories – Officers.
John Duff, 6th of Drummuir1 
He retired from the military in 1798, with the rank of Captain, late of the 93rd Regiment.1
- [S35] BLG1965 volume 1, page 216. See link for full details for this source. Hereinafter cited as. [S35]
David Claudius Gordon-Duff1 
He gained the rank of 2nd Lieutenant in the Royal Artillery.1
- [S526] Sir Bernard Burke, editor, Burke’s Genealogical and Heraldic History of the Landed Gentry, 13th edition, (London, England: Burke Publishing Co, 1921), page 529. Hereinafter cited as Burke’s Landed Gentry, 13th ed.
- [S35] BLG1965 volume 1, page 217. See link for full details for this source. Hereinafter cited as. [S35]
Lt.-Cdr. Randall Thomas Gordon-Duff1

He fought in the Second World War.2 He gained the rank of Lieutenant-Commander in the Royal Navy.3
- [S526] Sir Bernard Burke, editor, Burke’s Genealogical and Heraldic History of the Landed Gentry, 13th edition, (London, England: Burke Publishing Co, 1921), page 529. Hereinafter cited as Burke’s Landed Gentry, 13th ed.
- [S35] BLG1965 volume 1, page 217. See link for full details for this source. Hereinafter cited as. [S35]
- [S259] Commonwealth War Graves Commission, online http://www.cwgc.org. Hereinafter cited as Commonwealth War Graves Commission.
Margaret Mary Gordon-Duff1 
She lived in 1965 at Timber House, Warmwell, Dorset, England.2
- [S526] Sir Bernard Burke, editor, Burke’s Genealogical and Heraldic History of the Landed Gentry, 13th edition, (London, England: Burke Publishing Co, 1921), page 529. Hereinafter cited as Burke’s Landed Gentry, 13th ed.
- [S35] BLG1965 volume 1, page 217. See link for full details for this source. Hereinafter cited as. [S35]
Constantia Harriet Gordon-Duff1 
From 1926, her married name became Astell.2
- [S526] Sir Bernard Burke, editor, Burke’s Genealogical and Heraldic History of the Landed Gentry, 13th edition, (London, England: Burke Publishing Co, 1921), page 529. Hereinafter cited as Burke’s Landed Gentry, 13th ed.
- [S35] BLG1965 volume 1, page 217. See link for full details for this source. Hereinafter cited as. [S35]
Jane Ellen Butterfield1 
From March 1847, her married name became Gordon-Duff.1
Children of Jane Ellen Butterfield and Lachlan Duff Gordon-Duff, 8th of Drummuir and 10th of Park
- Thomas Duff Gordon-Duff, 9th of Drummuir and 11th of Park+1 b. 11 Aug 1848, d. 27 Mar 1923
- Mary Louisa Gordon-Duff1 b. 4 Sep 1852, d. 1868
- Archibald Hay Gordon-Duff+1 b. 6 Apr 1863, d. 19 May 1938
- Helen Elizabeth Gordon-Duff+1 b. 17 Oct 1866, d. 9 May 1892
- [S526] Sir Bernard Burke, editor, Burke’s Genealogical and Heraldic History of the Landed Gentry, 13th edition, (London, England: Burke Publishing Co, 1921), page 529. Hereinafter cited as Burke’s Landed Gentry, 13th ed.
Thomas Butterfield1
Child of Thomas Butterfield
- Jane Ellen Butterfield+1 d. 1915
- [S526] Sir Bernard Burke, editor, Burke’s Genealogical and Heraldic History of the Landed Gentry, 13th edition, (London, England: Burke Publishing Co, 1921), page 529. Hereinafter cited as Burke’s Landed Gentry, 13th ed.
James Duff1 
He gained the rank of Captain in the 40th Regiment.1
- [S526] Sir Bernard Burke, editor, Burke’s Genealogical and Heraldic History of the Landed Gentry, 13th edition, (London, England: Burke Publishing Co, 1921), page 529. Hereinafter cited as Burke’s Landed Gentry, 13th ed.
- [S35] BLG1965 volume 1, page 216. See link for full details for this source. Hereinafter cited as. [S35]