User blog comment:PhoenixRising101/Origin of Beginnings/@comment-4783583-20120323023203

Uhm first the marines/world government they obviously have people on their payroll to harvest the devil fruits. Intersting fact all marines we have seen with DF abilities are either Captains or above, my guess about this is that you have to be at least a captain before you may have a devil fruit (obviously if someone already has a DF before joining the marines and exception is made). Also to continue on this point I think that Admirals and above must have either haoshaku haki or a DF fruit.

Then to get to the pirates, we know that the most of them got theirs from the grand line, Roger's crew found one (buggy ate that one), Shanks crew found one (Luffy ate that one) Whitebeard's crew found several and he made the rule who finds it, eats it. So looking at DF and Pirates the most mysterious DF user is Alvida how the hell did she get her devil fruit, the only solutions to this is a far fetched one. I have the theory that there are several big libraries in the one piece world and each of those has an uneaten DF for study purposes. Alvida broke in the only East Blue located one and stole the DF and ate it. Yeah I told you it was far fetched.