Ted Peterson:
Julianos is indeed Julian LeFay; Mara is Marilyn Wasserman, another of our beta testers; Arkay came from R.K. Deutsch.
The weirdest name derivation was from one of our beta-testers named Lawrence Szydlowski, which is obviously not a good "fantasy" name. His name on-line was Smaug -- which we couldn't use, obviously, being one of the most famous dragons of all time. His sign-off, though, was Larry, "also known as the Old Smaug himself." That spells out A.K.A.T.O.S.H., so Akatosh became the name of our dragon god of time.
Zenithar is, if I remember correctly, based on a tester named Stephen Zepp.