parents of john kelley dean

john k dean was born in 1826 in tompkins county, likely in newfield or possibly ithaca......he married sophia brown in benton, yates county in 1851 and died in benton in 1907.....i have several records regarding his life in yates county but cannot find a record or documents that identify his parents......that is my brick wall......i have exhausted, as far as i know, all record depositories in new york, including state, county, municipal and church records, historical newspapers, local historical societies and historians.......i have no information about john k deans parents, siblings, etc......and cannot find any.......it is my brick wall......