The Château de Chaumont is a French castle at Chaumont-sur-Loire, Loir-et-Cher, France. The first château-fort on this site between Blois and Amboise was a primitive fortress built by Eudes II, Count of Blois, in the 10th century with the purpose of protecting Blois from attacks from his feudal rivals, the counts of Anjou.
On his behalf the Norman Gelduin received it, improved it and held it as his own. His great-niece Denise de Fougère, having married Sulpice d'Amboise, the château passed into the family of Amboise for five centuries.
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