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Dauphin, title of the eldest son of a king of France, the heir apparent to the French crown, from 1350 to 1830. The title was established by the royal house of France through the purchase of lands known as the Dauphine in 1349 by the future Charles V.
dauphin (ˈdɔːfɪn; dɔːˈfɪn; French dofɛ̃) n (Historical Terms) (1349–1830) the title of the direct heir to the French throne; the eldest son of the king of France [C15: from Old French: originally a family name; adopted as a title by the Counts of Vienne and later by the French crown princes]
Under the Valois and Bourbon dynasties, the Dauphin of France, generally shortened to Dauphin, was heir apparent to the throne of France. The title derived from the main title of the Dauphin, Dauphin of Viennois.
From 1350 to 1830, dauphin was the title given to the eldest son of a king of France, or the heir apparent to the French crown. The title was established by the royal house of France through the purchase of lands known as the Dauphiné in 1349 by the future Charles V.
As son of a king of France, he was a fils de France ("Child of France"). Louis Joseph died aged seven from tuberculosis and was succeeded as Dauphin (and thus heir-apparent) by his four-year-old brother Louis Charles.