Odo, Count of Penthièvre

Odo I
Duke of Brittany, with Alan III
Reign	1008–1035
Predecessor	Geoffrey I
Successor	Alan III by himself
Regent	Hawise of Normandy
Count of Penthièvre
Reign	1035–1079
Successor	Geoffrey I
Regent of Brittany
Reign	1040 - 1057
Spouse	Orguen-Agnes of Cornouaille
House	House of Rennes
Father	Geoffrey I
Mother	Hawise of Normandy
Born	c. 999
Died	c. 1079 Cesson
Burial	Saint-Brieuc
Religion	Roman Catholicism

Odo of Rennes (Breton: Eozen Penteur, French: Eudes/Éon de Penthièvre) (999–1079), Count of Penthièvre, was the youngest son of Duke Geoffrey I of Brittany and Hawise of Normandy, daughter of Richard I of Normandy. Following the death of his brother Duke Alan III, Eudes ruled as regent of Brittany in the name of his nephew Conan II, between 1040 and 1062. Eudes married Agnes of Cornwall, sister of Hoel II of Brittany. At least two of Eudes' sons (Alain and Brian) participated in the Norman conquest of England.^[1]

His children include: Geoffrey I, count of Penthièvre

• Alain Le Roux
• Stephen, Count of Tréguier married Havise of Guingamp
• Brian (French: Brien; Latin: Briennius), who defeated a second raid in the southwest of England, launched from Ireland by Harold's sons in 1069. Brian participated in the conquest of England and afterwards held the honor of Richmond, died without issue. He is presumed to have been illegitimate and is recorded as a witness to a document in 1084. He spent the latter part of his life as an invalid in Brittany.^[2]

His descendants became the junior branch of the Breton ducal family, which assumed control of the duchy in 1156 under Conan IV of Brittany.

Ancestry

See also

	Brittany portal
	Normandy portal

• Dukes of Brittany family tree

Notes

1. ^ Green, Judith A. (2002) The Aristocracy of Norman England, p. 41
2. ^ Cawley, Charles. "Comtes de Penthièvre". Medieval Lands. http://fmg.ac/Projects/MedLands/BRITTANY.htm#_Toc216697295. Retrieved 17 April 2010. 

Preceded by Geoffrey I

Duke of Brittany with Alan III 1008 - 1034

Succeeded by Alan III, alone

Persondata
Name	Odo of Rennes
Alternative names	Count of Penthièvre
Short description
Date of birth	999
Place of birth
Date of death	1079
Place of death	Cesson

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