[quote=ActRaiserTheReturned]
Cronos. . . has power over time. Even Mercury/Hermes could do it, even if it's a stretch, since he's the god of not just travel but magic.
[/quote]

Except, as the first post said, Cronos no longer had the strength in our present to do it. I suppose he could have sent Dracula back in the 1500s or 1600s, when the Renascence revived interest in ancient greek culture and he would have a little strength. You'd need a good reason for him to help you, though. Revenge might work, as Jesus was responsible for his downfall.
And "god of magic" seems more like he helps mortals with powers. If he had dominion over all magic, ie. domain over god powers, he'd be on par with Odin.
Travel might work, but it would take a lot of energy to travel so far into the past.
Also, I thought Hecate was goddess of magic?

[quote=Blackbeard]
Well Gilgamesh's mother was Ninsun a Godess and Lugulbanda the previous king of Uruk. I think it would be kinda difficult for the former to be true so I would prefer the latter that you would attribute to Buddah.
[/quote]

Well, in the case of demigods like Heracles, the "god-fetus" came from sometimes asexually reproducing deity Zeus (as happened with Athena). It could be made to work, but you could also say his "Mom" merely taught him magic (in the form of stat buffs or something) and then he learned to tap into belief/prayer as a power source.