Celes and Tina names influenced by a book?

First of all hello to everyone :D

I discovered that the original Terra name is Tina and has led me to think that ...

The names of the characters (CELES&TINA) may be a tribute to this book.
http://en.wikipedia.org/wiki/La_Celestina One of the greatest works of Spanish literature.


Knowing the taste of Spain by Square (Everyone loves Cid )
Do you think about it?

P.S.: Please excuse my bad English.