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Geoffroy I de Penthièvre was born on an unknown date to Éon I de Penthièvre (999-1079) and Agnes de Cornouaille (?-?) and died 1093 in Dol of unspecified causes. Notable ancestors include Charlemagne (747-814). Ancestors are from France, Germany, Belgium.



Children


Offspring of Geoffroy I de Penthièvre and unknown parent
Name Birth Death Joined with
Conan de Penthièvre (?-1093)





Footnotes (including sources)