It is difficult to evaluate, I think that Daniel is an Hebraïc first name, so that I don't know about how this first name should end in Latin ("Danielus" seems to be a little bit easy, in french we call that "cooking Latin"-just adding an "us" for it to sound Latin-
Daniel, elis, (Danielus, i) m. : Daniel (prophète des Juifs).
- voir hors site : Daniel.
I've found it in my online dictionary, so I think it is good and shall validate it