Yeah, the "field of flowers" does sound improbable! However, all I get when Googling, and indeed when Asking Jeeves, is a whole bunch of stuff on what looks like vintage horror movies, with a character called Ardeth Bey, who must therefore be masculine, though what he's doing with a -th ending to his name is more than I can imagine.
Do you have any ideas about how and why the endings of names get changed? Janet, for instance is obvious - but why Janice? On the analogy of Clarice?
I was at school with a Maryth, whose name is always given as: a form of Mary. Cool - but why? How? Why not Marysh, or Maryx, or Marice? And in that case, could Ardeth be a form of Arden - perhaps an attempt to make it more feminine-sounding, back in the good old days when such things mattered?