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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== He was the son of Duke Geoffrey I and Hawise of Normandy.〔Detlev Schwennicke, ''Europäische Stammtafeln: Stammtafeln zur Geschichte der Europäischen Staaten'', Neue Folge, Band II (Verlag von J. A. Stargardt, Marburg, Germany, 1984) Tafel 75〕 Alan succeeded his father as Duke of Brittany in 1008.〔Gwenno Piette, ''A concise History of Brittany'' (University of Wales Press, Cardiff, 2008), p. 38〕 Because he was still a minor at his father's death, his mother acted as regent of Brittany 〔''The Gesta Normannorum Ducum of William of Jumieges, Orderic Vitalis, and Robert of Torigni'', Vol. II, Ed. & Trans. Elisabeth M. C. Van Houts (The Clarendon Press, Oxford, New York, UK, 1995), pp. 14-5〕 while her brother Richard II, Duke of Normandy assumed guardianship over Brittany.〔Francois Neveux, ''A Brief History of the Normans'', Trans. Howard Curtis (Constable & Robinson, Ltd., London, 2006), p. 108〕 In 1018 Alan married Bertha of Blois, daughter of Odo II, Count of Blois and his second wife Ermengarde of Auvergne.〔 When Richard III, Duke of Normandy died in August of 1026, his brother Robert I succeeded him.〔David C. Douglas, ''William the Conqueror'' (University of California Press, Berkeley and Los Angeles, 1964), pp. 32-3〕 Alan apparently took advantage of the resulting turmoil to break free of Norman suzerainty.〔 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.〔David Crouch, ''The Normans'' (Hambledon Continuum, New York, 2007), p. 50〕 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.〔''The Gesta Normannorum Ducum of William of Jumieges, Orderic Vitalis, and Robert of Torigni'', Vol. II, Ed. & Trans. Elisabeth M. C. Van Houts (The Clarendon Press, Oxford, New York, UK, 1995), pp. 78-9〕 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.〔Among the guardians Duke Robert chose to watch over his son William were at least three family members. Alan III was probably selected as both a family member and one who would not expected to compete with young William. Gilbert, Count of Brionne was another grandson of Richard I who could be counted on for military support to aid William. Also the senior member of the family was Robert, Archbishop of Rouen who lent his powerful support to the young Duke William. See: Crouch, ''The Normans'' (2007). p. 60.〕〔Ordericus Vitalis, ''The Ecclesiastical History of England and Normandy'', Trans. Thomas Forester, Volume II (Henry G. Bohn, London, 1854), p. 161〕 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.〔Richard E. Barton, ''Lordship in the County of Maine, c. 890-1160'' (The Boydell Press, Woodbridge, 2004). pp. 47, 87〕 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.〔David Crouch, ''The Normans'' (Hambledon Continuum, New York, 2007), p. 61〕 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.〔 On 1 October 1040, while besieging a rebel castle near Vimoutiers in Normandy, Alan III suddenly died.〔 According to Orderic, he was poisoned by unnamed Normans.〔Not long after the last of young Duke William's three powerful guardians, Gilbert 'Crispin' Count of Brionne, was himself assassinated while riding with friends. See: Crouch, ''The Normans'' (2007), p. 61; and Cokayne, ''The Complete Peerage'' IV, pp. 308-9.〕〔Ordericus Vitalis, ''The Ecclesiastical History of England and Normandy'', Trans. Thomas Forester, Volume II (Henry G. Bohn, London, 1854), p. 74〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Alan III, Duke of Brittany」の詳細全文を読む スポンサード リンク
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