Hmmm . Is it actually an Italian name? I would assume it is if it's all vowels except 1 'F', but I've gone through a few different websites of Italian surnames and can find nothing that fits. If the 3rd letter is F then the 4th must be A,E,I,O or U but there's nothing fits that; if the 4th letter is F then the 3rd must be A,E,I,O or U but nothing fits that either! So it must be a very rare name indeed.
So I'll have to make it up: how about Diafeira or Diafeiri?