was
Roswitha Charmaine, although that may come across as too frilly. :o/
There's also:
Roswitha PearlRoswitha GladysRoswitha AgnesRoswitha Mame
Roswitha Maude (!) (This has real potential, I think. (o: )
Roswitha Hildegard (Again, real potential here, too, imho.)
Roswitha OliveRoswitha Fern (ok, I think I'm getting too botanical here, lol)
Roswitha NellRoswitha Blanche
Any catch your fancy? ;o)