Hi Bill,
James was the brother of my great-great-great grandfather Thomas Dillon (b. abt 1796 in Culpeper Co., d.1854 in Greenup Co., KY). I have some material on him and his descendants. I only have info. on three daughters, so am interested in learning if your Reuben could be a son as well.
Regards,
Rodney Dillon
P.S. Did we correspond some time back? Your name sounds familiar.