I always thought
Circe was unusable because of the mythology characters, although maybe that was just me. Now I think of GoT.
I don't usually disfavour a name because of something in popular culture (e.g.
Hermione) but I don't think
Circe or Cersei is usable.
Have you considered
Ceres, Sose,
Semele?
Sometimes sentences don't end the way you think they salad.