I have a few Hammans from Pike Co., OH. I have a William J. Hamman b. 1846 Pike Co., Ohio married Mary E. Bowyer.William d. 1915 in Bement, Piatt Co., IL. I also have a Mary C. Hamman b. 1849 Pike Co., OH. who married James H. Bowyer. Mary & James are both buried in Bement, Piatt Co., IL. I know alot of the Bowyer's were from Cass Co., IL. I do not know who the parents are at this time of William or Mary. I do have siblings ofMary asFred, George, & John. Do any of these Hammans sound familiar to you.