Nielsen Hayden genealogy
Family: John de Cobham / Joan de Beauchamp (F817)
m. 1314-
Male
John de Cobham
Birth of Cobham, Kent, England 
Death 25 Feb 1355 Burial Cobham, Kent, England Marriage 1314 [1] Father Henry de Cobham | F5104 Group Sheet Mother Maud de Morville | F5104 Group Sheet
Female
Joan de Beauchamp
Birth of Hatch Beauchamp, Taunton, Somerset, England Death Aft 1342 Burial Father John de Beauchamp | F4034 Group Sheet Mother Joan | F4034 Group Sheet
Female
+ Joan de Cobham
Birth of Cobham, Kent, England Death Bef 15 May 1357 Burial Newhouse Abbey, Lincolnshire, England Spouse Philip le Despenser | F223 Marriage Aft Jun 1339
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Sources - [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.
- [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.