I noticed while I was going through old postings of Cornell's that you had reference to Zebulon Cornell, In your research have you came across a Zebulon b. 1838 not sure where he came from but d. 1908 in Barry Co. MI. I'm trying to connect him with a William Cornell b 1863 d. 1890 Barry Co. MI.
Williams wifes was Emma Strickland. they had one child that I know of Roy E. Cornell. Roy changed his name to Olmstead after his mother married Jabez Olmstead after Williams death.
Just a wild shot sending this to you.