Here's a wild one...Hutton isn't a far jump from Hatton, Hattan, or Chattan.

On my mother's side, we find the surname Merritt. Alternate spellings include Merit, Merrit, Meritt, Marot, Marrot, Meret, Mario Marriott, Mariott, Mert...the list is, needless to say, quite extensive.

One think that I have to constantly remind myself is that until the mid-1800s spelling could vary quite widely, even for the same person during their lifetime.

Just a couple thoughts there, mate.