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Eustace I, Count of Boulogne, was a nobleman and founder of the Boulogne branch of the House of Flanders. He held the county of Boulogne from 1042 until his death in 1049. ==Life== He was the elder son of Count Baldwin II of Boulogne and Adelina of Holland.〔W.H. Turton, ''The Plantagenet Ancestry'' (Genealogical Publishing Co., Baltimore, 1968), p. 105〕 Eustace succeeded his father as count of Boulogne in 1042.〔Detlev Schwennicke, ''Europäische Stammtafeln: Stammtafeln zur Geschichte der Europäischen Staaten'', Neue Folge, Band III Teilband 4 (Verlag von J. A. Stargardt, Marburg, Germany, 1989), Tafel 621〕 Eustace I was also the count of Lens.〔Heather J. Tanner, ''Family, Friends and Allies; Boulogne and Politics in Northern France and England c. 879-1160'' (Brill, 2004), p. 61〕 In 1028 Eustace I confirmed the foundation of a college of canons in his castle at Lens〔 and despite accounts of Lens passing to Baldwin V of Flanders circa 1036 it was still held by Eustace I and was passed to his son Lambert at his death.〔Heather J. Tanner, ''Family, Friends and Allies; Boulogne and Politics in Northern France and England c. 879-1160'' (Brill, 2004), p. 97〕 During the minority of Baldwin IV, Count of Flanders, Eustace's grandfather, Arnulf III, Count of Boulogne had broken free of Flanders and operated as an independent prince, as did Eustace's father and Eustace himself.〔Heather J. Tanner, The Expansion of the Power and Influence of the Counts of Boulogne under Eustace II', ''Anglo-Norman Studies XIV: Proceedings of the Battle Conference 1991'', Ed. Marjorie Chibnall (The Boydell Press, Woodbridge, UK, 1992), p. 251〕 In 995, having attained his majority, Baldwin IV attempted to recover several of the independently held castles and to expand the Flemish borders.〔 This had caused considerable animosity between Baldwin IV, Count of Flanders and Eustace's father, but when Baldwin IV's son Baldwin V succeeded him in 1035 Eustace I and Baldwin V of Flanders cooperated on several ventures including several charters and in limiting the powers of the Castellan-advocates of several abbeys including the Abbey of Saint Bertin in Flanders.〔Heather J. Tanner, ''Family, Friends and Allies; Boulogne and Politics in Northern France and England c. 879-1160'' (Brill, 2004),p. 83〕 Eustace I was allied to the ducal house of Normandy by the marriage of his son Eustace II to Goda, niece of Richard II.〔Heather J. Tanner, ''Family, Friends and Allies; Boulogne and Politics in Northern France and England c. 879-1160'' (Brill, 2004),p. 113〕 This had far reaching alliances to other branches of these families including that of Edward the Confessor, King of England.〔 Under Eustace I the counts of Boulogne rose to great prominence in Northern France.〔John Carl Andressohn, ''The Ancestry and Life of Godfrey of Bouillon'' (Indiana University Press, 1947), p. 9〕 Eustace I died in 1049.〔 He was apparently a patron of Samer Abbey near Calais and he is said to have been buried there.〔Heather J. Tanner, ''Family, Friends and Allies; Boulogne and Politics in Northern France and England c. 879-1160'' (Brill, 2004),p. 118〕 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「Eustace I, Count of Boulogne」の詳細全文を読む スポンサード リンク
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