Duphin or Dauphin: How To spell?

The word Duphin 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 'U' as letter 'A' is phonetically ignored
Wrong Spelling: d-u-phin
Correct Spelling: d-au-phin
Check more misspelled words of Dauphin to spell it correct.