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Marie de Brienne, Dame of Margon, was born circa 1265 to Louis de Brienne (c1235-1263) and Agnès de Beaumont-au-Maine (c1225-1301) and died 1328 of unspecified causes. She married Henri III d'Avaugour (1247-1301) 1270 JL . Notable ancestors include Charlemagne (747-814), Henry II of England (1133-1189), William I of England (1027-1087), Hugh Capet (c940-996), Alfred the Great (849-899). Ancestors are from Spain, Portugal, France, the United Kingdom, Germany, Belgium, the Netherlands, Italy, Russia, Ukraine.


Offspring of Marie de Brienne and Henri III d'Avaugour (1247-1301)
Name Birth Death Joined with
Henri IV d'Avaugour (1280-1334)
Marguerite d'Avaugour (1285-c1332) 1285 1332 Guillaume V Paynel (1275-c1327)

Guillaume d'Avaugour (-1341)
Agnès d'Avaugour
Blanche Clémence d'Avaugour (c1290-1345)
Jean d'Avaugour (1291-1340)
Jeanne d'Avaugour
Marie d'Avaugour

Common ancestors of Marie de Brienne (1265-1328) and Henri III d'Avaugour (1247-1301)

  1. Richard II of the Aigle (1100-1176)

Footnotes (including sources)

‡ General