HaLeiVi: The Ancient Greeks named after their idols. There were a few rulers of Sicily named ‘Dionysus’.
Also, it is common Spanish people to name children after their Messiah (You, know, the one that starts with a J, which I am not going to write here for obvious reasons)
Additionally, many JEWISH names end with ‘E-L’ or ‘Y-A-H’, which are names of G-d.
I see no reason Persian naming practices should be any different from those of various civilizations over the last few millennia.