Mary Ierne Ready1
Her married name became Milner.1
Child of Mary Ierne Ready and Charles Milner
- Alfred Milner, 1st and last Viscount Milner1 b. 23 Mar 1854, d. 13 May 1925
- [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 196. Hereinafter cited as The New Extinct Peerage.
- [S5797] Kevin Rerady, “re: Ready Family,” family provided evidence then verified by subsequent research and verification by BENR (101053), 4 January 2012. Hereinafter cited as “re: Ready Family.”
Maj.-Gen. John Ready1,2 
He held the office of Lieutenant-Governor of Prince Edward Island between 1824 and 1832.3 He held the office of Governor of the Isle of Man between 1832 and 1845.1
Child of Maj.-Gen. John Ready and Susanna Bromley
- [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 196. Hereinafter cited as The New Extinct Peerage.
- [S5797] Kevin Rerady, “re: Ready Family,” family provided evidence then verified by subsequent research and verification by BENR (101053), 4 January 2012. Hereinafter cited as “re: Ready Family.”
- [S130] Wikipedia, online http;//www.wikipedia.org. Hereinafter cited as Wikipedia.
Arthur Maw Mitchison1
Child of Arthur Maw Mitchison and Mary Emmeline Russell
- Gilbert Richard Mitchison, Baron Mitchison+1 b. 23 Mar 1894, d. 14 Feb 1970
- [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 196. Hereinafter cited as The New Extinct Peerage.
Mary Emmeline Russell1
Her married name became Mitchison.1
Child of Mary Emmeline Russell and Arthur Maw Mitchison
- Gilbert Richard Mitchison, Baron Mitchison+1 b. 23 Mar 1894, d. 14 Feb 1970
- [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 196. Hereinafter cited as The New Extinct Peerage.
- [S467] The National Archives: UK government records and information management, online http://http://www.nationalarchives.gov.uk/. Hereinafter cited as The National Archives.
Naomi May Margaret Haldane1 

Naomi May Margaret Haldane was born circa 1898.3 She was the daughter of John Scott Haldane and Louisa Kathleen Trotter.1,4 She married Gilbert Richard Mitchison, Baron Mitchison, son of Arthur Maw Mitchison and Mary Emmeline Russell, on 11 February 1916.1 She died on 11 January 1999.3
From 11 February 1916, her married name became Mitchison.1 After her marriage, Naomi May Margaret Haldane was styled as Baroness Mitchison on 5 October 1964. She was an author of over 50 books.3 She was appointed Commander, Order of the British Empire (C.B.E.)3
Children of Naomi May Margaret Haldane and Gilbert Richard Mitchison, Baron Mitchison
- Hon. Sonja Lois Mitchison5
- Hon. Valentine Harriet Isobel Dione Mitchison5
- Hon. Denis Anthony Mitchison+1 b. 6 Sep 1919, d. 2 Jul 2018
- Dr. Hon. John Murdoch Mitchison+1 b. 11 Jun 1922
- Hon. Nicolas Avrion Mitchison+5 b. 5 May 1928
- [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 196. Hereinafter cited as The New Extinct Peerage.
- [S130] Wikipedia, online http;//www.wikipedia.org. Hereinafter cited as Wikipedia.
- [S466] Notices, The Telegraph, London, UK, 9 April 2005. Hereinafter cited as The Telegraph.
- [S37] BP2003 See link for full details for this source. Hereinafter cited as. [S37]
- [S21] L. G. Pine, The New Extinct Peerage, page 197.
John Scott Haldane1 
He was educated at Edinburgh Academy, Edinburgh, Midlothian, ScotlandG.2 He graduated from University of Edinburgh, Edinburgh, Midlothian, ScotlandG, with a Master of Arts (M.A.)2 He graduated from University of Edinburgh, Edinburgh, Midlothian, ScotlandG, with a Doctor of Medicine (M.D.)2 He was a Fellow at New College, Oxford University, Oxford, Oxfordshire, EnglandG.2 He was Professor and Director of Mining Research Laboratory at Birmingham University, Birmingham, Warwickshire, EnglandG.2 He was recognised by Lord Lyon King of Arms, and matriculated his arms at the Lyons Court on 15 November 1906.2 He was appointed Fellow, Royal Society (F.R.S.)2 He was President of the Institute of Mining Engineers between 1924 and 1928.2 He was awarded the Companion of Honour (C.H.) in 1927.2 He was Gifford Lecturer at Glasgow University, Glasgow, Lanarkshire, ScotlandG.2 He was awarded the Gold Medal of the Royal School of Mines.2 He was awarded the Baly Medal of the Royal College of Physicians.2 He was awarded the honorary degree of Doctor of Science (D.Sc.) by Cambridge University, Cambridge, Cambridgeshire, EnglandG.2 He was awarded the honorary degree of Doctor of Law (LL.D.) by Birmingham University, Birmingham, Warwickshire, EnglandG.2 He was awarded the Gold Medal of the Institute of Mining Engineers.2 He was awarded the honorary degree of Doctor of Law (LL.D.) by University of Edinburgh, Edinburgh, Midlothian, ScotlandG.2 He was awarded the honorary degree of Doctor of Science (D.Sc.) by Leeds University, Leeds, Yorkshire, West Riding, EnglandG.2 He was awarded the Royal Medal of the Royal Society.2
Children of John Scott Haldane and Louisa Kathleen Trotter
- John Burdon Sanderson Haldane3 b. 5 Nov 1892, d. 1 Dec 1964
- Naomi May Margaret Haldane+4 b. c 1898, d. 11 Jan 1999
- [S466] Notices, The Telegraph, London, UK, 9 April 2005. Hereinafter cited as The Telegraph.
- [S37] BP2003 volume 2, page 1724. See link for full details for this source. Hereinafter cited as. [S37]
- [S37] BP2003. [S37]
- [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 196. Hereinafter cited as The New Extinct Peerage.
Hon. Denis Anthony Mitchison1 
He was educated at Abbotsholme School, Rocester, Uttoxeter, Staffordshire, EnglandG.1 He graduated from Trinity College, Cambridge University, Cambridge, Cambridgeshire, EnglandG, with a Bachelor of Surgery (B.Chir.)1 He graduated from Trinity College, Cambridge University, Cambridge, Cambridgeshire, EnglandG, with a Bachelor of Medicine (M.B.)1 He was registered as a Licentiate, Royal College of Physicians, London (L.R.C.P.) in 1943.1 He was Professor of Bacteriology at Royal Post Graduate Medical School, London, EnglandG.1 He was registered as a Member, Royal College of Surgeons (M.R.C.S.)1
Children of Hon. Denis Anthony Mitchison and Ruth Sylvia Gill
- Petronella Susan Mitchison3 b. 18 Dec 1942
- Graeme Mitchison2 b. 26 Aug 1944, d. 13 Apr 2018
- Terence Anthony Mitchison3 b. 2 Oct 1951
- Clare Rachel Mitchison3 b. 12 Oct 1955
- [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 196. Hereinafter cited as The New Extinct Peerage.
- [S466] Notices, The Telegraph, London, UK. Hereinafter cited as The Telegraph.
- [S34] BP1970 page 1837. See link for full details for this source. Hereinafter cited as. [S34]
Ruth Sylvia Gill1
She graduated from Cambridge University, Cambridge, Cambridgeshire, EnglandG, with a Bachelor of Surgery (B.Chir.)1 She was registered as a Licentiate, Royal College of Physicians, London (L.R.C.P.)1 She was registered as a Member, Royal College of Surgeons (M.R.C.S.)1 She graduated with a Bachelor of Medicine (M.B.)1 From 9 September 1940, her married name became Mitchison.1
Children of Ruth Sylvia Gill and Hon. Denis Anthony Mitchison
- Petronella Susan Mitchison2 b. 18 Dec 1942
- Graeme Mitchison3 b. 26 Aug 1944, d. 13 Apr 2018
- Terence Anthony Mitchison2 b. 2 Oct 1951
- Clare Rachel Mitchison2 b. 12 Oct 1955
- [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 196. Hereinafter cited as The New Extinct Peerage.
- [S34] BP1970 page 1837. See link for full details for this source. Hereinafter cited as. [S34]
- [S466] Notices, The Telegraph, London, UK. Hereinafter cited as The Telegraph.
Hubert A. Gill1
Child of Hubert A. Gill
- [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 196. Hereinafter cited as The New Extinct Peerage.
Dr. Hon. John Murdoch Mitchison1
He was educated at Winchester College, Winchester, Hampshire, EnglandG.2 He graduated from Trinity College, Cambridge University, Cambridge, Cambridgeshire, EnglandG, in 1943 with a Bachelor of Arts (B.A.)2 He graduated from Trinity College, Cambridge University, Cambridge, Cambridgeshire, EnglandG, in 1950 with a Doctor of Philosophy (Ph.D.)2 He was Professor of Zoology in 1964 at University of Edinburgh, Edinburgh, Midlothian, ScotlandG.2
Children of Dr. Hon. John Murdoch Mitchison and Rosalind Mary Wrong
- Sarah Antonia Mitchison3 b. 22 Dec 1948
- Murray Neil Mitchison3 b. 2 May 1951
- Harriet Caroline Mitchison3 b. 19 Jun 1955
- Amanda Naomi Mitchison3 b. 20 Mar 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 196. Hereinafter cited as The New Extinct Peerage.
- [S21] L. G. Pine, The New Extinct Peerage, page 197.
- [S34] BP1970 page 1837. See link for full details for this source. Hereinafter cited as. [S34]