The land of Fort McAllister in Richmond Hill, GA was formerly owned by Joseph McAllister, descendent of Archibald McAllister of PA. If you haven't checked out Clan McAlister of America (www.clanmcalister.org
), you might want to do so. They offer a free genealogy query service and could prob give you more details. Good luck in your search!
Cindy McAlister Bresson