Nora Beatrice Gordon Duff1 
From 1913, her married name became Martinsen.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.”
Albert Martinsen1
- [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.”
Robert Harold Ambrose Gordon Duff1 
Child of Robert Harold Ambrose Gordon Duff and Marjory Howard
- Robert Airlie Gordon Duff1 b. 1909
- [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.”
Marjory Howard1
From 1905, her married name became Duff.1
Child of Marjory Howard and Robert Harold Ambrose Gordon Duff
- Robert Airlie Gordon Duff1 b. 1909
- [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.”
Robert Airlie Gordon 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.”
Arthur Allan Morison Duff1 
Children of Arthur Allan Morison Duff and Margaret Grace Rawson
- Joan Elsie Duff1 b. 1911
- Daniel Alexander Wyatt Rawson Duff1 b. 2 Aug 1912
- Anne Duff1 b. 1913
- Anthony Duff1 b. 1919
- [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 Grace Rawson1
From February 1909, her married name became Duff.1
Children of Margaret Grace Rawson and Arthur Allan Morison Duff
- Joan Elsie Duff1 b. 1911
- Daniel Alexander Wyatt Rawson Duff1 b. 2 Aug 1912
- Anne Duff1 b. 1913
- Anthony Duff1 b. 1919
- [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.”
- [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.”
Commander Wyatt Rawson1 
He was commissioned on 25 May 1867, in the service of the Royal Navy.2 He gained the rank of Commander in the Royal Navy.2
Child of Commander Wyatt Rawson
Child of Commander Wyatt Rawson and Emily Maud Hegan
- [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.”
- [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.”
- [S1122] Peerage News, online http://peeragenews.blogspot.co.nz/. Hereinafter cited as Peerage News.
Joan Elsie 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.”
Daniel Alexander Wyatt Rawson 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.”