I’ve always wondered. I don’t think it mentions it in the books. Although I could be wrong. How did Voldemort obtain her?
He found her in the forest in Albania, I think. Fellow flutherites, feel free to correct me if I’m wrong
I don’t know if there is a story of her origin, only her significance to him. I would say that Nagini is the closest thing Voldy had to a loved one.
Wikipedia has no information of her pre-Voldy history.
It’s not mentioned in the books and the HP Lexicon doesn’t have anything about it, either, which means JRo hasn’t said anything about it in interviews or anything.
I believe Voldermort got Nagini in the Albania forest also.