Much too Greek myth, and the connotations there are awful, not just "not great". The sound and look are nice, I'll grant it that.
I'd say siblings would be other mythology names (NOT
Ismene, though, because in addition to being his daughter she was his half-sister... argh, it's so complicated, the whole myth.)
My favorite Greek mythology names are, for girls,
Andromache,
Andromeda,
Alcyone,
Electra,
Circe,
Eurydice,
Ourania and Merope (and I like
Ismene, but it wouldn't work), and for boys,
Hector,
Cepheus,
Daedalus and
Icarus. Considerably less boy names, but I don't generally like many names ending in -us.