Does anyone here have any idea how far back the Fellowship of St. Giles goes?

I'm making up pregen characters for a 1960s DFRPG con adventure, and one of them is a Red Court Infected Vietnam survivor. I'm working on his background, and wondering if I can include the Fellowship in it or not. I'd like to, because it makes things easier, but if they're a more recent organization, I'm going to have to come up with another reason to keep him from turning into a full RC vampire (and thus becoming unplayable).