Welcome Cloudburst!
One time there was someone posting here on GC that claimed to be a legacy of something like 9 different NPC groups, or it might have been one of those “weird rush stories” where a PNM said it during recruitment. It’s not a very probable scenario (it seemed doubtful in that particular situation, whatever it was), but definitely possible if you have a large enough family where most women have gone Greek. Of course each group has its own legacy policy, so you’d have to make sure your grandmothers joined sororities that consider a granddaughter a legacy.
