The long struggle of the Thai against the Khmers, culminating in the attacks on and conquest of Angkor early in the fifteenth century A.D., brought the two peoples into intimate association. Thai literature was clearly a beneficiary of this close culture contact, and Cambodian influence upon it, dating back to this early period, is undoubted. Nevertheless, little detailed study of such influence has so far been attempted, partly because of a lack of suitable manuscript material, especially on the Cambodian side, and partly because serious comparative work of an historical nature on the two languages has hardly begun.