Peter W. Lehman & Barbara H Lehman

I am looking for information/documentation on Peter W. Lehman b. 1796 in Franklin Co., PA and died 1868 in Columbiana County, Ohio, buried in the Nold Mennonite Cemetery. He married Barbara H Lehman (2nd cousin) b. 1797 - d. 1877, buried beside her husband and they had one son, John Lehman (b. 1822 Franklin Co. - d. 1852 Columbiana Co., buried beside his parents), my great-great grandfather. I would like any documentation on Peter's or Barbara's birth, marriage, the birth of their son, when they moved to Columbiana County, his property, his will, an obituary, photos or any other documentation that anyone has on them. If anyone has found any sources on-line, I'd be grateful if you could point me in that direction. (I did find thier graves on FindaGrave.com)