Hmm... I'd name a brother and sister to
Thane and
Thalia Angus and
Athena.
I don't like
Thane because it simply doesn't feel like a person's name to me - more like a title or a place name.
Thalia has a pretty meaning but its many spelling and pronunciation variants give me a headache.
masculine list:
https://www.behindthename.com/pnl/191050/124079feminine list:
https://www.behindthename.com/pnl/191050/124080