Dwaylon is a rare American boys' name coined by Stephen King for his character Dwayne "Dwaylon" Harris in the novel "Night Shift". Its origin and meaning remain uncertain, but it may derive from Welsh Dwfn or be a blend of Dwane and Wayne. Despite its limited historical use, Dwaylon has gained some popularity, particularly in English-speaking countries like the U.S., although it remains relatively uncommon.