Franz's name actually has quite a bit of a story to it. Get him in a state to explain it, and he will, as it's best left IC than OOCly explained.
I will say that 'Franz' is not his real name. And he makes it a point to never -ever- give out the 'nil Renatus' part to most people.
(So yes, he'll never introduce himself as 'Franz Renatus'. It'd be 'Franz nil Renatus', if he did. But the likelihood of that is extremely rare, and there are no documents tying the name to him.)
I will say that 'Franz' is not his real name. And he makes it a point to never -ever- give out the 'nil Renatus' part to most people.
(So yes, he'll never introduce himself as 'Franz Renatus'. It'd be 'Franz nil Renatus', if he did. But the likelihood of that is extremely rare, and there are no documents tying the name to him.)