I take some solace, if that’s even the right word, having a mother who was extremely into genealogy, and if any of my recent (within a few hundred years) ancestors were wealthy enough to own slaves, I’d know. That said, any thinking person knows it’s only so far back for any human being before an ancestor reproduced via rape or some horrible arrangement. Short of directly inheriting wealth from a recent slave owner, the notion of having any guilt for their sins is just stupid.