Violet Georgiana Adele Graves1 
Sophia Marjorie Cowan1
From 26 July 1903, her married name became Watson.1 After her marriage, Sophia Marjorie Cowan was styled as Baroness Thankerton on 1 May 1929.
Children of Sophia Marjorie Cowan and William Watson, Baron Thankerton
- Hon. William Douglas Watson1 b. 25 Jan 1905, d. 11 Nov 1971
- Hon. Sophia Margaret Watson1 b. 2 Jul 1907
- Hon. David John Watson1 b. 29 Jul 1911, d. 27 Nov 1959
- [S21] L. G. Pine, The New Extinct Peerage 1884-1971: Containing Extinct, Abeyant, Dormant and Suspended Peerages With Genealogies and Arms (London, U.K.: Heraldry Today, 1972), page 266. Hereinafter cited as The New Extinct Peerage.
John James Cowan1
Child of John James Cowan
- [S21] L. G. Pine, The New Extinct Peerage 1884-1971: Containing Extinct, Abeyant, Dormant and Suspended Peerages With Genealogies and Arms (London, U.K.: Heraldry Today, 1972), page 266. Hereinafter cited as The New Extinct Peerage.
Hon. William Douglas Watson1 
He was educated at Winchester College, Winchester, Hampshire, EnglandG.1 He graduated from Trinity College, Cambridge University, Cambridge, Cambridgeshire, EnglandG, in 1926 with a Bachelor of Arts (B.A.)1 He was a practising Writer to the Signet (W.S.)1 He was admitted to the Royal Company of Archers.1 He gained the rank of Lieutenant-Colonel in the Royal Artillery.1 He fought in the Second World War between 1939 and 1945, where he was mentioned in despatches twice.1 He was awarded the Territorial Decoration (T.D.)1
- [S21] L. G. Pine, The New Extinct Peerage 1884-1971: Containing Extinct, Abeyant, Dormant and Suspended Peerages With Genealogies and Arms (London, U.K.: Heraldry Today, 1972), page 266. Hereinafter cited as The New Extinct Peerage.
- [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.
Enid Agnes Ballantyne1
From 16 June 1934, her married name became Watson.1
- [S21] L. G. Pine, The New Extinct Peerage 1884-1971: Containing Extinct, Abeyant, Dormant and Suspended Peerages With Genealogies and Arms (London, U.K.: Heraldry Today, 1972), page 266. Hereinafter cited as The New Extinct Peerage.
Colin Ballantyne1
Child of Colin Ballantyne
- [S21] L. G. Pine, The New Extinct Peerage 1884-1971: Containing Extinct, Abeyant, Dormant and Suspended Peerages With Genealogies and Arms (London, U.K.: Heraldry Today, 1972), page 266. Hereinafter cited as The New Extinct Peerage.
Hon. David John Watson1 
He was educated at Winchester College, Winchester, Hampshire, EnglandG.1 He graduated from Trinity College, Cambridge University, Cambridge, Cambridgeshire, EnglandG, in 1933 with a Bachelor of Arts (B.A.)1 He was awarded the Gray’s Inn in 1934 Barrister-at-Law.1 He was appointed Queen’s Counsel (Q.C.)1 He was admitted to Scots Bar in 1944 entitled to practise as a Advocate.1
- [S21] L. G. Pine, The New Extinct Peerage 1884-1971: Containing Extinct, Abeyant, Dormant and Suspended Peerages With Genealogies and Arms (London, U.K.: Heraldry Today, 1972), page 266. Hereinafter cited as The New Extinct Peerage.
