definite articles - 'the' before university names

Guess I will multiply threads, but sorry, I'm still confused:

at Jan Kazimierz University in Lwow

or

at the Jan Kazimierz University in Lwow

I've found the second one more common, though I feel the first one is more appropriate because the university is named after a person (Polish King Jan Kazimierz)? I mean, you don't say at the Stanford University, do you?