Douphin or Dauphin: How To spell?

The word Douphin is misspelled against Dauphin, a noun meaning "The title of the eldest son of the king of France, and heir to the crown. Since the revolution of 1830, the title has been discontinued."

--> Word contains consecutive vowels 'AU' in between alphabets d & phin is misspelled as 'OU'
Wrong Spelling:  d-ou-phin 
Correct Spelling:  d-au-phin 
Check more misspelled words of Dauphin to spell it correct.

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