Robert William Duff, 2nd of Fetteresso1 
Children of Robert William Duff, 2nd of Fetteresso and Mary Morrison
- Robert Duff, 3rd of Fetteresso+1 b. 1790, d. 30 Dec 1861
- Arthur Duff+1 b. 3 Feb 1797, d. 1855
- Helen Duff1 b. 27 Mar 1798, d. 1810
- Adam Duff+1 b. 11 Jun 1800, d. Apr 1870
- Thomas Abercromby Duff+1 b. 13 Feb 1802, d. 1862
- [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.”
Mary Morrison1 
by Henry Raeburn, 1799 2
Mary Morrison was born circa 1768.1 She was the daughter of George Morison and Jean Abercromby.1 She married Robert William Duff, 2nd of Fetteresso, son of Vice-Admiral Robert Duff of Logie and Fetteresso and Lady Helen Duff, in 1789.1 She died on 6 November 1833.1
From 1789, her married name became Duff.1
Children of Mary Morrison and Robert William Duff, 2nd of Fetteresso
- Robert Duff, 3rd of Fetteresso+1 b. 1790, d. 30 Dec 1861
- Arthur Duff+1 b. 3 Feb 1797, d. 1855
- Helen Duff1 b. 27 Mar 1798, d. 1810
- Adam Duff+1 b. 11 Jun 1800, d. Apr 1870
- Thomas Abercromby Duff+1 b. 13 Feb 1802, d. 1862
- [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.”
- [S3409] Caroline Maubois, “re: Penancoet Family,” e-mail message to BENR, 2 December 2008. Hereinafter cited as “re: Penancoet Family.”
George Morison1
Child of George Morison and Jean Abercromby
- Mary Morrison+1 b. c 1768, d. 6 Nov 1833
- [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.”
Jean Abercromby1 
by Allan Ramsay 2
Jean Abercromby married George Morison.
Her married name became Morison.
Child of Jean Abercromby and George Morison
- Mary Morrison+1 b. c 1768, d. 6 Nov 1833
- [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.”
- [S3409] Caroline Maubois, “re: Penancoet Family,” e-mail message to BENR, 2 December 2008. Hereinafter cited as “re: Penancoet Family.”
Robert Duff, 3rd of Fetteresso1 
Child of Robert Duff, 3rd of Fetteresso and Marie Madeleine Namout
- [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.”
Marie Madeleine Namout1
From 1834, her married name became Duff.1
Child of Marie Madeleine Namout and Robert Duff, 3rd of Fetteresso
- [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.”
Marie Albertine Duff1
Children of Marie Albertine Duff and Thomas Fraser Duff
- Robert F. Duff1 b. 1860
- Albert Adam Duff1 b. 1862, d. 1876
- [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.”
Thomas Fraser Duff1 
He lived at Woodcote, Oxfordshire, EnglandG.1
Children of Thomas Fraser Duff and Marie Albertine Duff
- Robert F. Duff1 b. 1860
- Albert Adam Duff1 b. 1862, d. 1876
- [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 Duff1 
He was also known as Arthur Abercromby.3,2
Child of Arthur Duff and Elizabeth Davidson Innes
- Rt. Hon. Sir Robert William Duff, 4th of Fetteresso+1 b. 8 May 1835, d. 15 Mar 1895
- [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.”
- [S474] FamilySearch, online http://www.familysearch.com. Hereinafter cited as FamilySearch.
- [S37] BP2003 volume 2, page 2052. See link for full details for this source. Hereinafter cited as. [S37]
Elizabeth Davidson Innes1,2 
From 2 December 1832, her married name became Duff.1
Child of Elizabeth Davidson Innes and Arthur Duff
- Rt. Hon. Sir Robert William Duff, 4th of Fetteresso+1 b. 8 May 1835, d. 15 Mar 1895
- [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.”
- [S474] FamilySearch, online http://www.familysearch.com. Hereinafter cited as FamilySearch.
- [S37] BP2003 See link for full details for this source. Hereinafter cited as. [S37]
