Looking for Information on Joseph Plowman Brn Abt 1840 IN PA

Hi there. I am looking for anything on a Joseph Plowman brn abt 1840 in PA. In 1868 he marries Martha Cays (brn 1851 in Ohio) in La Salle County, Il. they have three children Arthur, Elmer, and Dora. Arthur goes on to marry Amanda Defenbaugh ( i have traced her family back to early 1500's) and have 4 children of their own. I can only hope that this is of any help to those who read this. PLease feel free to to inquire about anything no matter how minute u may think it is. I am looking forward to hearing from u. Thanks for ur time.