Ed: I just searched the 1850 US Census, Westmoreland Co., Derry Twp, for James Patterson - and found him!Here's the info:
James Patterson, 49, farmer, value of real estate owned, $2200.Wife, Jane, 44.Children, James, 15 and Margaret, 11.This James, age 15 is a perfect age match for the James Patterson in the 1870 Census age 35.
I would say that I'm pretty convinced that these are the Patterson's I've been looking for and the Durlings, too.
Do you want the Durling info (and related families from my tree?)I'd like to get what you have.You hadn't mentioned if your Durling's are related to the Alexander Durling?If so, I'd like to know where you and your mother fit in?I know, too many questions.
I'll keep plugging away at the Durling and Patterson lines.Thanks again.