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In page Guillemette of Neufchâtel:

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She was the daughter of Amadeus, Count of Neufchâtel and his wife, Jordanna of Arberg.[1] In 1259, her great-aunt Margaret, married Richard of Neufchâtel-en-Bourgogne. As her dowry, she brought the Lordships of Blamont, Châtelot, Belmont, and Cuisance into the marriage. The Lords of Neufchâtel-en-Bourgogne placed Blamont under the protection of the Duke of Burgundy and thus detached it from Montbéliard.[citation needed]