Alistair James Montagu Hay1
He was educated at Eton College, Windsor, Berkshire, EnglandG.1 He graduated from University College, Oxford University, Oxford, Oxfordshire, EnglandG, with a Master of Arts (M.A.)1 He graduated from University College, Oxford University, Oxford, Oxfordshire, EnglandG, with a Doctor of Philosophy (D.Phil.)1 He was naturalized as a Australian citizen.1 He was a botanist.1 He lived in 2003 at 26 Swanson Street, Erskineville, New South Wales, AustraliaG.1
- [S37] BP2003 volume 3, page 3965. See link for full details for this source. Hereinafter cited as. [S37]
Nella Doreen Dutton1 
Nella Doreen Dutton also went by the nick-name of Dee.2 She gained the rank of Sergeant between 1939 and 1945 in the Women’s Auxiliary Air Force.1 Her married name became Hay. After her marriage, Nella Doreen Dutton was styled as Marchioness of Tweeddale on 30 March 1967.
Children of Nella Doreen Dutton and David George Montagu Hay, 12th Marquess of Tweeddale
- Lord Andrew Arthur George Hay+1 b. 24 Oct 1959
- Lord Hamish David Montagu Hay1 b. 24 Oct 1959
David George Montagu Hay, 12th Marquess of Tweeddale1 
He was educated at Eton College, Windsor, Berkshire, EnglandG.1 He gained the rank of Lieutenant in the Royal Naval Reserve.1 He was awarded the Albert Medal (A.M.) in 1941.1 He was awarded the George Cross (G.C.)1 He was awarded the Lloyd’s War Medal.1 He succeeded as the 20th Lord Hay of Yester [S., 1488] on 30 March 1967.1 He succeeded as the 12th Marquess of Tweeddale [S., 1694] on 30 March 1967.2 He succeeded as the 13th Earl of Tweeddale [S., 1646] on 30 March 1967.1 He succeeded as the 12th Earl of Gifford [S., 1694] on 30 March 1967.1 He succeeded as the 12th Viscount of Walden [S., 1694] on 30 March 1967.1 He succeeded as the 3rd Baron Tweeddale of Yester, co. Haddington [U.K., 1881] on 30 March 1967.1
Children of David George Montagu Hay, 12th Marquess of Tweeddale and Hon. Sonia Mary Peake
- Edward Douglas John Hay, 13th Marquess of Tweeddale2 b. 6 Aug 1947, d. 1 Feb 2005
- Charles David Montagu Hay, 14th Marquess of Tweeddale1 b. 6 Aug 1947
- Alistair James Montagu Hay1 b. 4 Nov 1955
Children of David George Montagu Hay, 12th Marquess of Tweeddale and Nella Doreen Dutton
- Lord Andrew Arthur George Hay+1 b. 24 Oct 1959
- Lord Hamish David Montagu Hay1 b. 24 Oct 1959
Hon. Sonia Mary Peake1 
She was with the Women’s Royal Naval Service.2 From 26 October 1946, her married name became Hay. From 1966, her married name became Hammond-Maude.
Children of Hon. Sonia Mary Peake and David George Montagu Hay, 12th Marquess of Tweeddale
- Edward Douglas John Hay, 13th Marquess of Tweeddale2 b. 6 Aug 1947, d. 1 Feb 2005
- Charles David Montagu Hay, 14th Marquess of Tweeddale2 b. 6 Aug 1947
- Alistair James Montagu Hay2 b. 4 Nov 1955
Osbert Peake, 1st Viscount Ingleby 
He was educated at Eton College, Windsor, Berkshire, England.1 He fought in the First World War.1 He gained the rank of Lieutenant in the Coldstream Guards.1 He was educated at Royal Military College, Sandhurst, Berkshire, England.1 He graduated from Christ Church, Oxford University, Oxford, Oxfordshire, England, in 1919 with a Bachelor of Arts (B.A.)1 He was admitted to Inner Temple in 1923 entitled to practise as a barrister.1 He held the office of Member of Parliament (M.P.) (Conservative) for Leeds between 1929 and 1956.1 He held the office of Parliamentary Under-Secretary, Home Office between 1939 and 1944.1 He was appointed Privy Counselor (P.C.) in 1943.1 He held the office of Finance Secretary of the Treasury between 1944 and 1945.1 He gained the rank of Major in the Nottinghamshire Yeomanry.1 He held the office of Minister of Pensions and Northern Ireland between 1951 and 1955.1 He was created 1st Viscount Ingleby, of Snilesworth, North Riding of co. York [U.K.] on 17 January 1956.2
Children of Osbert Peake, 1st Viscount Ingleby and Lady Joan Rachel de Vere Capell
- Hon. Iris Irene Adele Peake+1 b. 25 Jul 1923, d. 18 Nov 2021
- Hon. Sonia Mary Peake+1 b. 12 Dec 1924, d. 30 Jul 2009
- Martin Raymond Peake, 2nd Viscount Ingleby+2 b. 31 May 1926, d. 14 Oct 2008
- Imogen Clarissa Peake1 b. 18 Jan 1934, d. 29 Oct 1937
- Hon. Mary Rose Peake+2 b. 23 Apr 1940
Lady Joan Rachel de Vere Capell1 
Lady Joan Rachel de Vere Capell was born on 28 February 1899.1 She was the daughter of George Devereux de Vere Capell, 7th Earl of Essex and Adela Grant.3 She married Osbert Peake, 1st Viscount Ingleby, son of Major George Herbert Peake and Evelyn Mary Dundas, on 19 June 1922.1 She died in 1979.1
She was educated at Oxford University, Oxford, Oxfordshire, EnglandG.1 Her married name became Peake. After her marriage, Lady Joan Rachel de Vere Capell was styled as Viscountess Ingleby on 17 January 1956.
Children of Lady Joan Rachel de Vere Capell and Osbert Peake, 1st Viscount Ingleby
- Hon. Iris Irene Adele Peake+3 b. 25 Jul 1923, d. 18 Nov 2021
- Hon. Sonia Mary Peake+3 b. 12 Dec 1924, d. 30 Jul 2009
- Martin Raymond Peake, 2nd Viscount Ingleby+3 b. 31 May 1926, d. 14 Oct 2008
- Imogen Clarissa Peake3 b. 18 Jan 1934, d. 29 Oct 1937
- Hon. Mary Rose Peake+3 b. 23 Apr 1940
George Devereux de Vere Capell, 7th Earl of Essex 
He gained the rank of officer in the Grenadier Guards.1 He succeeded as the 7th Viscount Malden, co. Essex [E., 1661] on 11 September 1892.1 He succeeded as the 7th Earl of Essex [E., 1661] on 11 September 1892.1 He succeeded as the 8th Baron Capell of Hadham, co. Hereford [E., 1641] on 11 September 1892.1 He held the office of Deputy Lieutenant (D.L.) of Hertfordshire.1 He held the office of Vice-Lord-Lieutenant of Hertfordshire.1 He held the office of Justice of the Peace (J.P.) for Hertfordshire.1 He gained the rank of Boer War between 1900 and 1901 in the with the Imperial Yeomanry.1 He held the office of Aide-de-Camp to HM King Edward VII.1 He gained the rank of Colonel in the Territorial Forces.1
Child of George Devereux de Vere Capell, 7th Earl of Essex and Ellenor Harriet Maria Harford
- Algernon George de Vere Capell, 8th Earl of Essex+2 b. 21 Feb 1884, d. 8 Dec 1966
Children of George Devereux de Vere Capell, 7th Earl of Essex and Adela Grant
- Lady Iris Mary Athenais de Vere Capell2 b. 8 Jun 1895, d. 4 Oct 1977
- Lady Joan Rachel de Vere Capell+2 b. 28 Feb 1899, d. 1979
Adela Grant1 
by Edward Hughes, 1893 2
Adela Grant was the daughter of Beach Grant.3 She married George Devereux de Vere Capell, 7th Earl of Essex, son of Lt.-Col. Arthur de Vere Capell, Viscount Malden and Emma Martha Meux, on 14 December 1893 at London, EnglandG.1 She died on 28 July 1922.1
After her marriage, Adela Grant was styled as Countess of Essex on 14 December 1893. From 14 December 1893, her married name became Capell.
Children of Adela Grant and George Devereux de Vere Capell, 7th Earl of Essex
- Lady Iris Mary Athenais de Vere Capell3 b. 8 Jun 1895, d. 4 Oct 1977
- Lady Joan Rachel de Vere Capell+3 b. 28 Feb 1899, d. 1979
Beach Grant1
Child of Beach Grant
- Adela Grant+2 d. 28 Jul 1922
Lady Iris Mary Athenais de Vere Capell1 
She was educated at Oxford University, Oxford, Oxfordshire, EnglandG.1
