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Count of Boulogne was a historical title in theKingdom of France. The city ofBoulogne-sur-Mer became the centre of theCounty of Boulogne during the ninth century. Little is known of the early counts, but the first holder of the title is recorded in the 11th century.
Eustace II of Boulogne accompaniedWilliam I of England (the Conqueror) during theNorman Conquest in 1066 and fought on his side at theBattle of Hastings. His son,Eustace III, was a major participant in theFirst Crusade with his younger brothers: Geoffrey and Baldwin (who later becameKing of Jerusalem). After Baldwin's death the throne was offered to Eustace, who was reluctant and declined; the throne was then offered to Geoffrey.Afonso (alsoKing of Portugal) from Dammartin became Count of Boulogne from 1235 to 1253.
Count Renaud of Boulogne obtained the title by abducting and marrying Countess Ida in 1190 and later gained title to Dammartin and Aumale. An early friend of King Philippe II Augustus, he turned against the king by joining the forces of theHoly Roman Empire at theBattle of Bouvines in 1214 (where he was defeated, captured, imprisoned and committed suicide).
Boulogne came under nominal royal control in 1223, when it passed toPhilippe Hurepel ("spiked hair", the son of Philippe II). Hurepel participated in theAlbigensian Crusade in 1226 and later revolted in 1229 againstBlanche of Castile. He was slain by Count Dietrich V of Cleaves in 1234, according to sources after accidentally killing Count Florent IV of Holland in a tournament. The county reverted to the crown and was passed to Adelaide of Brabant, wife of William III of Auvergne.
Boulogne was attacked and besieged a number of times during theHundred Years' War and repeatedly passed between the English and the French. In 1477, Bertrand VI of La Tour gave the county to Louis XI, who incorporated the county into France. Boulogne remained part of France, except for a brief period of English rule under Henry VIII.
William I of Blois (c. 1137 – 11 October 1159) was Count of Boulogne (1153–1159) and Earl of Surreyjure uxoris (1153–1159). He was the third son of King Stephen of England and Countess Matilda I of Boulogne.







In 1477, Bertrand II dealt withLouis XI, exchanging the county of Boulogne with the county ofLauragais. Boulogne, so became part of theroyal domain.[1][2][3]
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