Nielsen Hayden genealogy
Family: Thomas Stewart / Margaret Sinclair (F17269)
m. Abt 3 Jun 1353
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Male
Thomas Stewart
Birth Death 1361 Dunbarton Castle, Dunbartonshire, Scotland 
Burial Marriage Abt 3 Jun 1353 [1, 2] Father John Stewart | F17270 Group Sheet Mother Margaret Abernethy | F17270 Group Sheet
Female
Margaret Sinclair
Birth Abt 1330 of Roslin, Midlothian, Scotland Death Burial Other Spouse John Sinclair | F16369 Marriage Abt 1345 Father William Sinclair | F17256 Group Sheet Mother
Female
+ Margaret Stewart
Birth Abt 1354 Death Bef 23 Mar 1418 Burial Spouse William de Douglas | F17268 Marriage
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Sources - [S800] The Scots Peerage, Founded on Wood's Edition of Sir Robert Douglas's Peerage of Scotland, Containing an Historical and Genealogical Account of the Nobility of That Kingdom. Ed. James Balfour Paul. Edinburgh: David Douglas, 1904-1914.
- [S128] The Complete Peerage of England, Scotland, Ireland, Great Britain and the United Kingdom, Extant, Extinct or Dormant ed. Vicary Gibbs, H. A. Doubleday, Duncan Warrand, Howard de Walden, Geoffrey H. White and R. S. Lea. 2nd edition. 14 volumes (1-13, but volume 12 spanned two books), London, The St. Catherine Press, 1910-1959. Volume 14, "Addenda & Corrigenda," ed. Peter W. Hammond, Gloucestershire, Sutton Publishing, 1998.
- [S800] The Scots Peerage, Founded on Wood's Edition of Sir Robert Douglas's Peerage of Scotland, Containing an Historical and Genealogical Account of the Nobility of That Kingdom. Ed. James Balfour Paul. Edinburgh: David Douglas, 1904-1914.