Kathleen Diana Cecilia Patricia Ferguson1
She was Member of Parliament (M.P.)1 She was Knight Commander, Order of the British Empire (K.B.E.)1 Her married name became Cadman.
John Cadman, 1st Baron Cadman1 
He was educated at Newcastle-under-Lyme, Staffordshire, EnglandG.2 He was educated at Durham University, Durham, County Durham, EnglandG.2 He was a manager in 1900 at Silverdale Colleries, Silverdale, Staffordshire, EnglandG.2 He was Inspector of Mines for East Scotland in 1902.3 He was Inspector of Mines for Staffordshire in 1903.1 He was Government Mining Engineer in 1904 at Trinidad and TobagoG.1 He was Inspector of Mines in 1907 at TrinidadG.1 He was Professor of Mining between 1908 and 1920 at Birmingham University, Birmingham, Warwickshire, EnglandG.3 He was a member of the Admiralty Commission to Investigate Iranian Oilfields in 1913.1 He was a technical advisor to the Government of Nigeria in 1915.1 He was appointed Companion, Order of St. Michael and St. George (C.M.G.) in 1916.3 He was appointed Knight Commander, Order of St. Michael and St. George (K.C.M.G.) in 1918.3 He was awarded the Order of the Rafidian of Iraq 1st class.2 He was awarded the Knight Commander, Order of the Crown of Italy.2 He was awarded the Grand-Croix, Ordre national de la Légion d’honneur.2 He was chairman of Anglo-Iranian Oil and Iraq Petroleum.3 He was appointed Knight Grand Cross, Order of St. Michael and St. George (G.C.M.G.) in 1929.3 He was a director of the GWR.1 He was awarded the honorary degree of Doctor of Science (D.Sc.)3 He was awarded the honorary degree of Doctor of Law (LL.D.) by Birmingham University, Birmingham, Warwickshire, EnglandG.3 He was awarded the honorary degree of Doctor of Civil Law (D.C.L.) by Durham University, Durham, County Durham, EnglandG.3 He was a director of the Suez Canal Company.1 He was awarded the honorary degree of Doctor of Engineering (D.Eng.) by Melbourne University, Melbourne, Victoria, AustraliaG.3 He was appointed Fellow, Royal Society (F.R.S.)3 He was created 1st Baron Cadman, of Silverdale, co. Stafford [U.K.] on 7 June 1937.1 He has an extensive biographical entry in the Dictionary of National Biography.4

Children of John Cadman, 1st Baron Cadman and Lilian Harragin
- Hon. Marguerite Betty Cadman+3
- John Basil Cope Cadman, 2nd Baron Cadman+3 b. 23 Mar 1909, d. 5 Apr 1966
- Hon. Arthur Denys Cadman+3 b. 1 Jun 1911, d. 5 Dec 1999
- Hon. Sybil Mary Cadman+3 b. 1916, d. 18 Dec 2007
- [S37] BP2003 volume 1, page 634. See link for full details for this source. Hereinafter cited as. [S37]
- [S6] G.E. Cokayne; with Vicary Gibbs, H.A. Doubleday, Geoffrey H. White, Duncan Warrand and Lord Howard de Walden, editors, The Complete Peerage of England, Scotland, Ireland, Great Britain and the United Kingdom, Extant, Extinct or Dormant, new ed., 13 volumes in 14 (1910-1959; reprint in 6 volumes, Gloucester, U.K.: Alan Sutton Publishing, 2000), volume XIII, page 585. Hereinafter cited as The Complete Peerage.
- [S37] BP2003. [S37]
- [S18] Matthew H.C.G., editor, Dictionary of National Biography on CD-ROM (Oxford, U.K.: Oxford University Press, 1995), Cadman, John. Hereinafter cited as Dictionary of National Biography.
Griffith ap Llewelyn1
Child of Griffith ap Llewelyn
- [S37] BP2003 volume 1, page 636. See link for full details for this source. Hereinafter cited as. [S37]
Una Nancy Cadman1 
From 17 September 1936, her married name became Clarke.
Children of Una Nancy Cadman and Reginald Colin Russell Clarke
- Peter James Colin Clarke2 b. 25 Aug 1938, d. 26 Aug 2013
- Una Janet Clarke2 b. 28 Aug 1941
E. E. Clarke1
Child of E. E. Clarke
- Reginald Colin Russell Clarke+2 d. 22 Jul 1942
Reginald Colin Russell Clarke1 
Children of Reginald Colin Russell Clarke and Una Nancy Cadman
- Peter James Colin Clarke2 b. 25 Aug 1938, d. 26 Aug 2013
- Una Janet Clarke2 b. 28 Aug 1941
Peter James Colin Clarke1 
- [S37] BP2003 volume 1, page 634. See link for full details for this source. Hereinafter cited as. [S37]
- [S37] BP2003. [S37]
- [S7249] Janet Clarke, “re: Clarke Family,” family provided evidence then verified by subsequent research and verification by BENR (101053), 4 September 2014. Hereinafter cited as “re: Clarke Family.”
Una Janet Clarke1
She lived in 2003 at 3 Woodside Cottages, Freshford, Bath, Somerset, EnglandG.1
Cynthia Cadman1
From 1 June 1939, her married name became Marriott.
Children of Cynthia Cadman and Lt.-Col. Ian Arthur Marriott
- Major Simon Hugh Cadman Marriott+2 b. 7 Mar 1941
- Hugh William Marriott+2 b. 4 Mar 1942, d. 22 Aug 2018
- Charles Luke Marriott2 b. 16 Apr 1946, d. 26 Mar 1949