Cassandra is my cousin's name (
Cassandra Lee,
Lee being a family name). She's fourteen, and goes by
Cassie mostly, but her mother always calls her
Cassandra, sometimes
Cass, and my cousin introduces herself as either
Cassandra or
Cassie, depending on her mood. Interestingly,
Georgia was one of her almost names, but
Cassandra was chosen as its less common (and my uncle wasn't too keen on
Georgia anyway) but now my cousin has a best friend named
Cassandra. Still, she knows about three or so Georgias, so the theory came true. She goes by Kassie over msn and such (oh, teenagers...)
Oh and she loves the Greek myth. So I think it's a positive.
Out of your combos, I like
Cassandra Mary best.