From http://www.geocities.com/sam_cook_53/grpf2459.html : may be the Joseph Jackson captured and adopted by Shawnee at Blue Licks with Daniel Boone. The Battle of Blue Licks was in 1782. No Jackson is listed on the Battle of Blue Licks Monument, Robertson County, Ky (see http://ftp.rootsweb.com/pub/usgenweb/ky/robertson/military/bluelicks.txt)