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Birth:          ABT  997 Brittany
Death:          1 Oct 1046 

Notes
https://en.wikipedia.org/wiki/Alan_III,_Duke_of_Brittany
Alan III of Rennes (997–1 October 1040) (French: Alain III de Bretagne) was Count of 
Rennes and duke of Brittany, by right of succession from 1008 to his death.
Life[edit]

He was the son of Duke Geoffrey I and Hawise of Normandy.[1] Alan succeeded his 
father as Duke of Brittany in 1008.[2] Because he was still a minor at his father's 
death, his mother acted as regent of Brittany [3] while her brother Richard II, Duke of 
Normandy assumed guardianship over Brittany.[4] In 1018 Alan married Bertha of 
Blois, daughter of Odo II, Count of Blois and his second wife Ermengarde of 
Auvergne.[1]

When Richard III, Duke of Normandy died in August 1026, his brother Robert I 
succeeded him.[5] Alan apparently took advantage of the resulting turmoil to break 
free of Norman suzerainty.[4] In the early 1030s Robert I successfully attacked Dol 
and Alan's retaliatory raid on Avranches was repulsed causing continued raiding back 
and forth between them.[6] Facing an invasion from Normandy via land and from Duke 
Robert's fleet, Robert, Archbishop of Rouen mediated a truce between his two 
nephews at Mont Saint-Michel where Alan swore fealty to his cousin Robert.[7] When 
he left Normandy for the Holy Land Robert I, Duke of Normandy appointed his cousin, 
Alan III, to be a guardian of his young son William.[a][8] Alan III also assisted Herbert 
I 'Wake-Dog' in his wars with Avesgaud, Bishop of Le Mans and was with the count in 
his attack on Avesgaud's castle at La Ferté-Bernard destroying the castle and causing 
Avesgaud to flee.[9]

In 1037 at the death of Robert, Archbishop of Rouen, the protection of young William 
was now left to Alan III and his cousin Gilbert who tentatively held Normandy 
together.[10] They appointed Mauger to the now vacant see of Rouen and his brother 
William as count of Arques, attempting to gain their support for Duke William.[10] On 1 
October 1040, while besieging a rebel castle near Vimoutiers in Normandy, Alan III 
suddenly died.[10] According to Orderic, he was poisoned by unnamed Normans.[b]
[11]

Family[edit]

By Bertha of Blois, he had two children:
Conan II, (d. 1066), succeeded his father.[1]
Hawise of Brittany, who married Hoel of Cornouaille.[1]

After 14 May 1046 his widow Bertha married secondly Hugh IV, Count of Maine.[1]

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 OF BLOIS Bertha (ABT 1005 - 13 Apr 1085)
    m. 1018 

Notes

Parents
OF BLOIS Odo (Eudes) II ( 983 - 15 Nov 1037)
OF AUVERGNE Ermengarde ()

Children by OF BLOIS Bertha ABT 1005 - 13 Apr 1085
____ Hawise (ABT 1033 - 1072)
DE BRITTANY Emma (ABT 1034 - 1094)

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