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The Duchy of Cornwall, established in 1337 by King Edward III, is one of two royal duchies, a type of land management and financial investment firm that can carry the functions of a corporation or trust.—Edward Segarra, USA Today, 30 Dec. 2025 Just like the Duchy of Cornwall that generates revenue for Prince William, both duchies were established hundreds of years ago to provide income for the sovereign and the heir to the throne.—Janine Henni, People.com, 22 July 2025 However, the duchy passed on to Prince William when Charles became king on the death of Queen Elizabeth II in September 2022.—Jack Royston, MSNBC Newsweek, 21 July 2025 Known collectively as Hessians, since most Germans hired by London to fight in America came from Hesse-Kassel, this contingent was largely from the small, impoverished duchy of Brunswick, whose ruling family had intermarried with the British royal family.—/ Cbs News, CBS News, 13 June 2025 See All Example Sentences for duchy
Word History
Etymology
Middle English duche, from Anglo-French duché, from duc
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