John Duff1
Child of John Duff and Elizabeth Abercrombie
- [S1438] Sir William, Bt. Arbuthnot, “re: Arbuthnot and Duff Families,” e-mail message to British and European Nobility Register, 29 August 2005 and later. Hereinafter cited as “re: Arbuthnot and Duff Families.”
Andrew Duff1
- [S1438] Sir William, Bt. Arbuthnot, “re: Arbuthnot and Duff Families,” e-mail message to British and European Nobility Register, 29 August 2005 and later. Hereinafter cited as “re: Arbuthnot and Duff Families.”
Helen Hay1
Child of Helen Hay and Andrew Duff
- [S1438] Sir William, Bt. Arbuthnot, “re: Arbuthnot and Duff Families,” e-mail message to British and European Nobility Register, 29 August 2005 and later. Hereinafter cited as “re: Arbuthnot and Duff Families.”
Elizabeth Abercrombie1
Her married name became Duff.1
- [S1438] Sir William, Bt. Arbuthnot, “re: Arbuthnot and Duff Families,” e-mail message to British and European Nobility Register, 29 August 2005 and later. Hereinafter cited as “re: Arbuthnot and Duff Families.”
Margaret Gordon1 
She lived at Cairnbarrow, ScotlandG.1 Her married name became Duff. Her married name became Ogilvie.1
Children of Margaret Gordon and John Duff
- Margaret Ogilvie Duff1
- Adam Duff+1 b. 1590, d. Apr 1674
- [S37] BP2003 volume 1, page 1426. See link for full details for this source. Hereinafter cited as. [S37]
Beatrix Gordon1 

Beatrix Gordon was born in 1608 at Cairnborrow, Aberdeenshire, ScotlandG.1 She married Adam Duff, son of John Duff and Margaret Gordon, in 1622 at Cairnborrow, Aberdeenshire, ScotlandG.3
From 1622, her married name became Duff.1
Children of Beatrix Gordon and Adam Duff
- Jean Duff1
- Alexander Duff of Keithmore+4 b. 1623, d. 1696
- John Duff+1 b. 1624
- George Duff+1 b. 1628, d. 1665
- William Duff+1 b. 1632, d. 1715
- [S1438] Sir William, Bt. Arbuthnot, “re: Arbuthnot and Duff Families,” e-mail message to British and European Nobility Register, 29 August 2005 and later. Hereinafter cited as “re: Arbuthnot and Duff Families.”
- [S555] BBC – Your Paintings, online http://www.bbc.co.uk/arts/yourpaintings/. Hereinafter cited as BBC – Your Paintings.
- [S35] BLG1965 volume 1, page 215. See link for full details for this source. Hereinafter cited as. [S35]
- [S37] BP2003 volume 1, page 1426. See link for full details for this source. Hereinafter cited as. [S37]
Jean Duff1
Her married name became Muir.1
- [S1438] Sir William, Bt. Arbuthnot, “re: Arbuthnot and Duff Families,” e-mail message to British and European Nobility Register, 29 August 2005 and later. Hereinafter cited as “re: Arbuthnot and Duff Families.”
John Muir1
- [S1438] Sir William, Bt. Arbuthnot, “re: Arbuthnot and Duff Families,” e-mail message to British and European Nobility Register, 29 August 2005 and later. Hereinafter cited as “re: Arbuthnot and Duff Families.”
Helen Grant1 

Helen Grant was born in 1635.3 She was the daughter of Alexander Grant of Ballentomb.1 She married Alexander Duff of Keithmore, son of Adam Duff and Beatrix Gordon, in 1650.1 She died in 1694.1
From 1650, her married name became Duff.3
Children of Helen Grant and Alexander Duff of Keithmore
- Mary Duff+3
- Elizabeth Duff3
- Jean Duff+3 d. 1725
- Alexander Duff of Braco+1 b. 1652, d. 19 Dec 1705
- William Duff+1 b. 1653, d. 1 May 1722
- Margaret Duff3 b. 1654
- Patrick Duff of Craigston+1 b. 1655, d. 3 Aug 1731
- [S37] BP2003 volume 1, page 1426. See link for full details for this source. Hereinafter cited as. [S37]
- [S270] Online Arbuthnot Family Tree, online http://www.kittybrewster.com. Hereinafter cited as Arbuthnot Family Tree.
- [S1438] Sir William, Bt. Arbuthnot, “re: Arbuthnot and Duff Families,” e-mail message to British and European Nobility Register, 29 August 2005 and later. Hereinafter cited as “re: Arbuthnot and Duff Families.”
Alexander Grant of Ballentomb1 
Child of Alexander Grant of Ballentomb
- Helen Grant+1 b. 1635, d. 1694
- [S37] BP2003 volume 1, page 1426. See link for full details for this source. Hereinafter cited as. [S37]