House of Béthune
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The House of Bethune (French: Maison de Béthune pronounced [mɛzɔ̃ də betyn]) is an ancient French noble house from the province of Artois in the north of France whose proven filiation dates back to Guillaume de Béthune who made his will in 1213. This family became extinct in 1807 with Maximilien-Alexandre de Béthune, Duke of Sully (1784-1807).[1]
There are other families called de Bethune or Bethune, but their links with the house of Bethune are not proven.[2]