Funny, but
Guillaume -
Wilhelm doesn't bother me at all! I can do the sound changes easily. But that S that should be a Z, the o in the middle, the ie and i with the same sounds in
German but not in French ... if you take the meanings, anyone would rather be a
Sieglinde than a field of rye, but that's seldom relevant.
Claire doesn't appear very often any more, but if she does it would be interesting to see if she has anything to add.