In Darth Plagueis, he is shown as a teenager, with a father, mother and several siblings. The likelihood of anything before that is unlikely. I think it is safe to assume that he was born naturally to the woman he calls mother, and doesn't realize any of his gifts until Darth Plagueis makes contact and begins to turn him to the Dark side and instruct him in the ways of the force. After that , he isn't very old when the clone wars begin, and the physical body dies at the end of ROTJ, but he still goes on transferring his essence into cloned bodies until he runs out, and finally, with no body to inhabit, he becomes one with the force, and his story is over.
The very existence of flamethrowers proves that some time, somewhere, someone said to themselves, "You know, I want to set those people over there on fire, but I'm just not close enough to get the job done." -George Carlin