We've had some discussion on the John Keim from Chester Co, PA who is said to have died abt. 1786 in Chester Co, PA, leaving wife, Margaret. There is an ancestral file on the LDS website listing the names of their children, of course we KNOW everything we find can't be taken as fact! Worth checking out though if you think you might descend from the Chester Co branch! See: http://www.familysearch.com/Eng/Search/af/family_group_record.asp?familyid=9258247