Jim,
I don't have anything on your wife's ancestors. That's interesting because my mother waws a Pitts and married a Pitts. Both families were from Caroline County. Actually they were connected way back when. I know of at least two Pitts families Caroline County that I have not been able to connect to, however. One is currently located near Port Royal and the other near Sparta. I'm still trying and if I find anything out, I will let you know.
Ken