Thanks Jan for the help on the counties. I was wondering why people were writing about Elizabeth in NJUNION when I had Elizabethtown in Essex! However my Thompsons were in Ohio (Jersey, of course - Licking county) by the 1830's. Does the book on Passaic Valley cover the period of 1660-1700? If so, I'll certainly try to find a copy. Happy hunting and thanks again, Margaret