I don't know if you already have this information, but I have a copy of a list of marriage records of Columbiana, Ohio, which I got at the Youngstown Public Library. This states that Nancy Crawford married Robert G. Adams on 6-15-1848. There is a note which says page 508. This is in Book 3 of the afore-mentioned title, and it was submitted by the Lewis Kinney Chapter of the N.S.D.A.R, Lisbon (Ohio) Chapter, June, 1969. I think that it was a little publication, and I have no idea what N.S.D.A.R means. I just scribbled the title down, as I was searching for members of my Crawfords. Susan Crawford.