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Birth:           999 
Death:          7 Jan 1079 

Notes
joined with kinsman William I and sent his son along with 5000 Bretons to assist 
William in the invasion. Alan Rufus received huge gift of at least 440 manors and 140 
knights fees (more than 100,000 acres). Alan Rufus began to build the castle at 
Richmond. All of this eventually went to Eudo's son Ribald.
https://en.wikipedia.org/wiki/Odo,_Count_of_Penthi%C3%A8vre
Odo of Rennes (Medieval Breton: Eudon Pentevr, Modern Breton: Eozen Penteur, 
Latin: Eudo, French: Eudes/Éon de Penthièvre) [a] (999–1079), Count of Penthièvre, 
was the youngest of the three sons of Duke Geoffrey I of Brittany and Hawise of 
Normandy, daughter of Richard I of Normandy. Eozen married Agnes of Cornouaille 
(Orguen Kernev), the daughter of Alan Canhiart, Count of Cornouaille and sister of 
Hoel II, Duke of Brittany who was married in 1066 to Eozen's niece Hawise, Duchess 
of Brittany.

Role in Governance of Brittany[edit]

When Eozen's father Duke[b] Geoffrey I died on 20 November 1008, both Eozen and 
his older brother Alan were minors.

Duke Geoffrey had initiated a dynastic double marriage with Richard II, Duke of 
Normandy by marrying Hawise of Normandy, one of Richard's sisters, in 996; this was 
followed by the marriage of Geoffrey's sister Judith of Brittany to Richard around the 
year 1000. Alan and Eozen were thus double-first cousins of Duke Richard II's 
children, including Richard III, Duke of Normandy and Robert I, Duke of Normandy 
(William the Conqueror's father), nephews of Emma of Normandy, and first cousins of 
Emma's children Edward the Confessor, Harthacnut, Goda of England, Gunhilda of 
Denmark and Alfred Aetheling.

At Geoffrey's death, Alan became de jure Duke, as Alan III, Duke of Brittany,[c] 
Hawise took on the role of Regent, and Richard asserted the role of Guardian of 
Brittany, an arrangement reciprocated on the death of Robert I, Duke of Normandy in 
1035.

Also in 1035, after a dispute between Eozen and Duke Alan III, their uncle Judicaël 
Bishop of Vannes arbitrated, and Alan III gave Eozen the bishoprics of Saint-Brieuc, 
Saint-Malo, Tréguier and Dol-de-Bretagne, as well as the counties and baronies of 
Penthièvre, Goëlo, Avaugour and Lamballe. Eozen placed his capital at Lamballe, 
where he began issuing coins in his own name.

Following the death of his brother Duke Alan III in 1040, Eozen ruled as regent of 
Brittany in the name of his nephew Conan II, holding Conan in custody. Conan was 
freed by his supporters in 1047. Eozen's regency should have ended when Conan 
reached his majority (circa 1054), but Eozen refused to relinquish control of the 
Duchy.

In 1054 Geoffrey, Viscount of Mayenne in Maine, affronted by William of Normandy's 
new fortifications at Ambrieres, "appealed to Geoffrey, Count of Anjou" who "called to 
his assistance Guy-William of Aquitaine and Count Eudo of Brittany"[1]

In a charter dated to 1056/1060, Eozen ("Eudo") granted land "in pago Belvacensi" 
(Beauvais, Picardy) to the Abbey of Angers Saint-Aubin (q.v. Albinus of Angers). 
Witnesses included his wife Orguen and their sons Gausfridus, Alanus Rufus, 
Willelmus, Rotbertus and Ricardus (Geoffrey, Alan Rufus, William, Robert and 
Richard).

By 1056 Conan gained the upper hand in Brittany, and in 1057 he captured his uncle 
Eozen and chained him in a prison cell. Eozen's eldest son Geoffrey Boterel continued 
to fight.

In 1062, peace was concluded between Conan and Geoffrey. Eozen, who was now 
free, continued the fight alone.

In histories favourable to the house of Penthièvre, Eozen is shown as effectively 
ruling Brittany between 1040 and 1062. In other histories his rule is shown as ending 
with his capture in 1057.

Conan was a legitimate contender for the title of Duke of Normandy, so he became a 
serious rival to Duke William.

In 1064, Eozen's liegeman Rivallon I of Dol invited Duke William to join him against 
Conan, thus initiating the Breton-Norman War of 1064-1065 in which Normandy, Anjou, 
Dol de Bretagne and the captive Harold Godwinson combined against Conan II, as 
depicted in three panels of the Bayeux Tapestry. Historians differ on whether William 
or Conan should be considered the victor in this conflict.

Involvement in the Preparations for the Norman Conquest of England[edit]

Eozen provided, trained and equipped 5000 Breton soldiers for William the 
Conqueror's army. Of these, 4000 were professionals, comprising light cavalry, heavy 
cavalry, archers, crossbowmen and axemen; he also trained 1000 levied (conscripted) 
spearmen. Eozen put these troops on 100 ships under the command of his sons Count 
Alan Rufus and Count Brian, and they sailed from Brittany to join the Norman forces 
gathering at Barfleur then on to William's staging point at Saint-Valery-sur-Somme, in 
readiness to cross the Channel.

Rebellion against Hoel II of Brittany[edit]

Despite his advanced years, Eozen was involved in the failed 1075/1076 rebellion 
against Hoel II, Duke of Brittany, by Geoffrey Grenonat of Rennes and Ralph de Gael 
(fresh from his 1075 rebellion against King William). Hoel II was supported by William 
the Conqueror, briefly placing Eozen and William on opposing sides once again, a 
situation that was soon resolved when, to William's disappointment, Hoel came to 
terms with the rebels.

Death[edit]

On 7 January 1079, at about 80 years of age, Eozen died in Cesson-Sévigné, an 
eastern suburb of Rennes. He was buried in Saint-Brieuc Cathedral.

In his memory, “Comes Alanus Rufus” (Count Alan Rufus), his second son, donated 
property to Swavesey Abbey in Cambridgeshire, for the soul of “patris sui Eudonis 
comitis” (his father Count Eozen), by an undated charter witnessed by “…Ribaldus et 
Bardulfus fratres comitis…” (Ribald and Bardulf, brothers of Count Alan).

Family[edit]

Thomas Forester’s 1854 translation of volume 2 of Orderic Vitalis’s “The Ecclesiastical 
History of England and Normandy”, book 5, chapter 9, section 43 and page 164, last 
paragraph, states concerning Eozen's sons:

“God also gave him seven sons, who became remarkable for the singular and 
changeable events of their lives. The studious might compose a long and pleasing 
history, from true accounts of their various fortunes.”

Eozen's children with Agnes include:
Adèle (born c. 1035, died after 1056/1057).[2]
Geoffrey Boterel I, count of Penthièvre (d. 24 August 1093).
Brian - Earl of Cornwall (d. after 1084) (possibly illegitimate).[d]
Alan Rufus (Latin; alternatively Alain Le Roux in French, or Alan Ar Rouz in Breton, 
called Count Alan in the Domesday Book, his name means "Red Deer" or "Hart") (d. 
between 1093 and 1098). He promoted trade at Boston, Lincolnshire, built St Mary's 
Abbey, York, Richmond Castle and the first castle at Middleham, and was effectively 
the first Earl of Richmond, though the majority of his manors were in East Anglia. 
Richmondshire in North Yorkshire is described in the Domesday Book as "Terra Alani 
Comitis" ("The Land of Count Alan") in "Eborakscire" (Yorkshire).[6] In the Rebellion 
of 1088, he was the first of the great magnates to support William II of England 
against Odo, Earl of Kent and his allies.
Alan the Black (alternatively Alain Niger, or Alan Ar Du in Breton, his name means 
"Black Deer") (d. between 1094 and 1098), inherited from Alan Rufus.[e]
Stephen, Count of Tréguier married Havise of Guingamp - succeeded Alan Rufus and 
Alan the Black as de facto Earl of Richmond. Stephen and Havise had a number of 
legitimate children and grandchildren, all of whom are ancestors of the current British 
Royal Family.
Robert, a priest in Yorkshire (d. after 1083).
Richard, a canon of Bayeux at the time when Thomas of Bayeux, Thomas's brother 
Samson and William de Saint-Calais were also canons there.
Guillaume or William, who came to Switzerland, entering the service of the Holy 
Roman Emperor; he was the suppressor of the revolt of Agaunum (today Saint-
Maurice-en-Valais), and received a castle in his honour.
An unnamed daughter, who married Enisandus Musardus de Pleveno who was the 
Lord of Cheveley in Cambridgeshire (under Alan Rufus as tenant-in-chief) and first 
Constable of Richmond Castle and lord of some twenty manors in Richmondshire. 
Cheveley was recorded until 1457 as remaining under the overlordship of the Honour 
of Richmond.[7]

Sons of Eozen who were probably illegitimate include:
Ribald, who received the Lordship of Middleham from Alan Rufus.[f]
Bardolf, who moved to England where he held the lordship of Ravensworth and 
became the ancestor of the Fitzhugh family.
Bodin, Lord of Bedale and brother of Bardolf.
(Possibly) Derrien, Lord of La Roche-Derrien in Brittany.

At least two of Eozen's sons (Alan Rufus and Brian) were early participants in the 
Norman conquest of England.[8]

Eozen's descendants formed the junior branch of the Breton ducal family, which 
gained control of the duchy in 1156 under Conan IV of Brittany.

Odo is a twenty-eighth great-grandfather of Cindy Crawford.

Parents
OF RENNES Geoffrey (ABT  980 - 20 Nov 1008)
____ Avicia (Hawise) (ABT  977 - 21 Feb 1034)

Siblings
____ Alan III (ABT  997 - 1 Oct 1046)
____ Eudo (Eudes) ( 999 - 7 Jan 1079)
OF BRITTANY Geoffrey II (ABT 1003 - )

Marriage To ____ Orguen (ABT 1000 - AFT 1056)
    m.  

Notes


Children by ____ Orguen ABT 1000 - AFT 1056
DE BREVAL Robert (ABT 1024 - AFT 1060)
DE RAMSAY William (ABT 1040 - )
DE BRITTANY Maud (Matilda) (ABT 1043 - )

Marriage To ----- ----- (unknown mistress) (ABT 1024 - )
    m.  

Notes


Children by ----- ----- (unknown mistress) ABT 1024 - 
____ Bardolf (ABT 1045 - 1120)
____ Ribald (ABT 1055 - 1121)
____ ----- (dtr of Eudes) (ABT 1065 - )

Marriage To DE CORNOUAILLE Agnes (ABT 1026 - )
    m.  

Notes

Parents
CANHIART Alain ( - 1058)
DE NANTES Judith ()

Children by DE CORNOUAILLE Agnes ABT 1026 - 
____ Stephen (ABT 1060 - 21 Apr 1136)

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