Agnes de Dammartin was born circa 1166 to Alberic II de Dammartin (-1200) and Mahaut de Clermont (1147-1200) . She married William I de Fiennes (c1160-c1240) . Notable ancestors include Charlemagne (747-814), Alfred the Great (849-899), Hugh Capet (c940-996). Ancestors are from France, the United Kingdom, Belgium, Germany.


Offspring of Agnes Dammartin and William I de Fiennes (c1160-c1240)
Name Birth Death Joined with
daughter de Fiennes (c1188-?)
Baldwin de Fiennes (c1190-?)
William de Fiennes (c1200-?)
Enguerrand II de Fiennes (c1210-1265) 1210 1265 Isabelle de Conde (c1214-)

Mahaut de Fiennes (c1210-aft1244) 1210 1244 Baudouin III de Guînes (1198-1244)

Footnotes (including sources)

‡ General
  • Collins's peerage of England; genealogical, biographical, and ..., Volume 6 By Arthur Collins,



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