Edward de Westhorpe1
Child of Edward de Westhorpe and Johan de Manby
- [S47] BIFR1976 page 1195. See link for full details for this source. Hereinafter cited as. [S47]
Johan de Manby1
Child of Johan de Manby and Edward de Westhorpe
- [S47] BIFR1976 page 1195. See link for full details for this source. Hereinafter cited as. [S47]
Marmaduke Thweng1 
He lived at Cornborough, Yorkshire, England.1
- [S47] BIFR1976 page 1195. See link for full details for this source. Hereinafter cited as. [S47]
Rodney Somerset de Chair1
He was educated at Wellesley House, Broadstairs, Kent, England.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.”
Sarah L. Trubshawe1
From 1966, her married name became de Chair.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.”
- [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.”
Camilla Joy Victoria Burdett-Blackett1
From 10 July 2000, her married name became de Chair.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.”
Peter Dudley de Chair1 
- [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 Eleanor Arbuthnot1 

at 43 Carlisle Mansions, London 1
Mary Eleanor Arbuthnot was born on 8 March 1861 at Ootacamund, India.1 She was the daughter of William Reierson Arbuthnot and Mary Helen Anstruther.1 She died in 1945.1
- [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.”
Helen Frances Arbuthnot1 
From 2 February 1886, her married name became Middleton.1
Children of Helen Frances Arbuthnot and Lt.-Col. William Crawford Middleton
- William Archibald Arbuthnot Middleton1 d. 25 Apr 1915
- Cicely Helen Middleton+1 b. 16 Mar 1899, d. 1959
- [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.”
Lt.-Col. William Crawford Middleton1 
He gained the rank of Lieutenant-Colonel in the 2nd Dragoons, Royal Scots Greys.1
Children of Lt.-Col. William Crawford Middleton and Helen Frances Arbuthnot
- William Archibald Arbuthnot Middleton1 d. 25 Apr 1915
- Cicely Helen Middleton+1 b. 16 Mar 1899, d. 1959
- [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.”