Haven't read any mention of the Spanish bringing crossbows, but it is possible. The English, probably not; the Vikings, assuming they made it here, quite probably. There is the possibility of natives capturing a crossbow, and trying to reproduce it, but I haven't seen any proof, either. I am leary of people who " aren't going to do your research for you" - usually means there isn't any basis for their claims!
Hawkdancer