Nielsen Hayden genealogy
Family: William de Munchensy / Aveline de Clare (F1604)
m. Bef 1186-
Male
William de Munchensy
Birth of Winfarthing, Norfolk, England 
Death Bef 7 May 1204 Swanscombe, Dartford, Kent, England Burial Marriage Bef 1186 [1] Father Warin de Munchensy | F5399 Group Sheet Mother Agnes Fitzjohn | F5399 Group Sheet
Female
Aveline de Clare
Birth Abt 1172 Death Bef 4 Jun 1225 Burial Other Spouse Geoffrey fitz Peter | F3537 Marriage Bef 29 May 1205 Father Roger de Clare | F5663 Group Sheet Mother Maud de St. Hilary | F5663 Group Sheet
Male
+ Warin de Munchensy
Birth of Winfarthing, Norfolk, England Death Abt 20 Jul 1255 Burial Spouse Denise de Anesty | F6011 Marriage Spouse Joan Marshal | F938 Marriage Aft 14 May 1219
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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.