Eusteddfod or Eisteddfod: How To spell?

The word Eusteddfod is misspelled against Eisteddfod, a noun meaning "Am assembly or session of the Welsh bards; an annual congress of bards, minstrels and literati of Wales, -- being a patriotic revival of the old custom."

Word begins with consecutive vowels 'EI' followed by alphabets 'steddfod' is misspelled as 'EU'
Wrong Spelling:  eu-steddfod 
Correct Spelling:  ei-steddfod 
Check more misspelled words of Eisteddfod to spell it correct.