The other spellings (Taliah,
Tahlia etc) are just that - spelling variations. Changing the spelling of an existing name is a popular way of creating a "different-looking" name while maintaining the same sound. The variations don't have their own meanings.
The two original names are
Talia (Hebrew) and
Thalia (Greek) - click the links.
~Chrisell~
Proudly Australian
www.archaeochrisell.blogspot.com