Nielsen Hayden genealogy
Family: Edmund "Crouchback" / Blanche of Artois (F3898)
m. 18 Jan 1276
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Male
Edmund "Crouchback"
Birth 16 Jan 1245 London, England 
Death 5 Jun 1296 Bayonne, Aquitaine, France 
Burial Westminster Abbey, Westminster, Middlesex, England 
Marriage 18 Jan 1276 [1, 2] Paris, France [1, 2] 
Father Henry III, King of England | F3648 Group Sheet Mother Eleanor of Provence, Queen Consort of England | F3648 Group Sheet
Female
Blanche of Artois
Birth Abt 1248 Death 2 May 1302 Paris, France 
Burial Church of the Cordeliers, Paris, France 
Other Spouse Enrique I, King of Navarre | F3800 Marriage 1269 Father Robert of France | F220 Group Sheet Mother Mahaut of Brabant | F220 Group Sheet
Male
Thomas of Lancaster
Birth Death 22 Mar 1322 Pontefract, Yorkshire, England 
Burial Spouse Alice Lacy | F9682 Marriage
Male
+ Henry of Lancaster
Birth Abt 1280 Death 22 Sep 1345 Burial The Newarke, Leicester Castle, Leicester, Leicestershire, England 
Spouse Maud de Chaworth | F1680 Marriage Bef 2 Mar 1297
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Sources - [S142] Royal Ancestry: A Study in Colonial and Medieval Families by Douglas Richardson. Salt Lake City, 2013.
- [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., "apparently between 27 July and 29 Oct. 1276".
- [S142] Royal Ancestry: A Study in Colonial and Medieval Families by Douglas Richardson. Salt Lake City, 2013.