Euphemia Stewart1 
Child of Euphemia Stewart and Patrick de Dunbar, 5th Earl of Dunbar
- Patrick de Dunbar, 6th Earl of Dunbar+3 b. c 1213, d. 24 Aug 1289
- [S323] Sir James Balfour Paul, The Scots Peerage: founded on Wood’s edition of Sir Robert Douglas’s The Peerage of Scotland (Edinburgh, Scotland: David Douglas, 1904), volume I, page 12. Hereinafter cited as The Scots Peerage.
- [S37] BP2003 volume 1, page 1207. 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 IV, page 506. Hereinafter cited as The Complete Peerage.
Patrick de Dunbar, 5th Earl of Dunbar1 
He succeeded as the 5th Earl of Dunbar [S., c. 1115] on 31 December 1232.2 In 1235 he led troops in suppression of the rebel Bastard of Galloway.2
Child of Patrick de Dunbar, 5th Earl of Dunbar and Euphemia Stewart
- Patrick de Dunbar, 6th Earl of Dunbar+1 b. c 1213, d. 24 Aug 1289
- [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 IV, page 506. Hereinafter cited as The Complete Peerage.
- [S37] BP2003 volume 1, page 1207. See link for full details for this source. Hereinafter cited as. [S37]
Elizabeth Stewart1 
Her married name became Douglas.1
Child of Elizabeth Stewart and Sir William ‘Le Hardi’ Douglas of that Ilk
- Sir James Douglas, 6th of Douglas+1 d. 1330
- [S323] Sir James Balfour Paul, The Scots Peerage: founded on Wood’s edition of Sir Robert Douglas’s The Peerage of Scotland (Edinburgh, Scotland: David Douglas, 1904), volume I, page 13. Hereinafter cited as The Scots Peerage.
Katherine Cayley1 
From 19 May 1831, her married name became Beaumont.1 From 6 May 1845, her married name became Legard.1
Children of Katherine Cayley and Henry Ralph Beaumont
- Richard Thomas Beaumont1
- Emily Beaumont+1 d. 11 Apr 1895
- Mary Catherine Beaumont1
- Henry Frederick Beaumont+1 b. 10 Mar 1837, d. 6 Oct 1913
- George Beaumont1 b. b 1838
Children of Katherine Cayley and Captain James Anlaby Legard
- Colonel Sir James Digby Legard+3 b. 12 Jul 1846, d. 16 Sep 1935
- Allayne Beaumont Legard+3 b. 14 Apr 1847, d. 27 Jan 1933
Sir John Stewart of Bonkyl1

He fought in the Battle of Falkirk on 22 July 1298.1
Children of Sir John Stewart of Bonkyl and Margaret de Bonkyl
- Sir Alan Stewart+1 d. 19 Jul 1333
- Sir Walter Stewart of Garlies+1
- Sir James Stewart+2 d. 19 Jul 1333
- Sir John Stewart1 d. 19 Jul 1333
- Isabella Stewart+2 d. a 15 Jul 1351
- Sir Alexander Stewart of Bonkyl+2 d. 1319
- Sir Hugh Stewart2
- Sir Robert Stewart2
- [S37] BP2003 volume 2, page 1511. See link for full details for this source. Hereinafter cited as. [S37]
- [S323] Sir James Balfour Paul, The Scots Peerage: founded on Wood’s edition of Sir Robert Douglas’s The Peerage of Scotland (Edinburgh, Scotland: David Douglas, 1904), volume I, page 13. Hereinafter cited as The Scots Peerage.
Sir John Stewart1 
He fought in the Battle of Dundalk on 14 October 1318.1
- [S323] Sir James Balfour Paul, The Scots Peerage: founded on Wood’s edition of Sir Robert Douglas’s The Peerage of Scotland (Edinburgh, Scotland: David Douglas, 1904), volume I, page 14. Hereinafter cited as The Scots Peerage.
Andrew Stewart 
He was a hostage for his father.1
- [S323] Sir James Balfour Paul, The Scots Peerage: founded on Wood’s edition of Sir Robert Douglas’s The Peerage of Scotland (Edinburgh, Scotland: David Douglas, 1904), volume I, page 14. Hereinafter cited as The Scots Peerage.
Sir James Stewart1 
He lived at Durisdeer, Dumfries-shire, ScotlandG.1
- [S323] Sir James Balfour Paul, The Scots Peerage: founded on Wood’s edition of Sir Robert Douglas’s The Peerage of Scotland (Edinburgh, Scotland: David Douglas, 1904), volume I, page 14. Hereinafter cited as The Scots Peerage.
Giles Stewart1 
Her married name became Menzies.1 She was also known as Egidia.1
- [S323] Sir James Balfour Paul, The Scots Peerage: founded on Wood’s edition of Sir Robert Douglas’s The Peerage of Scotland (Edinburgh, Scotland: David Douglas, 1904), volume I, page 14. Hereinafter cited as The Scots Peerage.
Sir George Cayley, 6th Bt.1 
He succeeded as the 6th Baronet Cayley, of Brompton, co. York [E., 1661] on 15 March 1792.2 He was appointed Fellow, Royal Society (F.R.S.)4 He held the office of Member of Parliament (M.P.) for Scarborough between 1832 and 1834.4 In 1853 at Brompton-by-Sawdon, Yorkshire, EnglandG, he was an aeronautical pioneer, organizing the first manned flight (though with his coachman, not himself, as pilot.)2 He also invented railway brakes and signalling systems, the tracked tank, artifical hands, self-righting lifeboats, mechanized agriculture and the tensioned spoked metal wheel later used in bicycles.2 He was founder of Regent Street Polytechnic, London (now University of Westminster) and a promoter of railway safety.2 He has an extensive biographical entry in the Dictionary of National Biography.5

Children of Sir George Cayley, 6th Bt. and Sarah Walker
- Katherine Cayley+1 d. 12 Mar 1887
- Emma Cayley+3 d. 2 Aug 1848
- Isabella Cayley+3 b. c 1797, d. 27 Dec 1881
- Sarah Philadephia Cayley+3 b. c 1802, d. 23 Apr 1885
- Sir Digby Cayley, 7th Bt.+3 b. 13 Mar 1807, d. 21 Dec 1883
- [S8] BP1999 volume 1, page 62. See link for full details for this source. Hereinafter cited as. [S8]
- [S37] BP2003 volume 1, page 735. See link for full details for this source. Hereinafter cited as. [S37]
- [S37] BP2003. [S37]
- [S15] George Edward Cokayne, editor, The Complete Baronetage, 5 volumes (no date (c. 1900); reprint, Gloucester, U.K.: Alan Sutton Publishing, 1983), volume III, page 187. Hereinafter cited as The Complete Baronetage.
- [S18] Matthew H.C.G., editor, Dictionary of National Biography on CD-ROM (Oxford, U.K.: Oxford University Press, 1995), Cayley, George. Hereinafter cited as Dictionary of National Biography.