The original Palace Law of A.D. 1360 relating to succession since Ayutthaya Kingdom period (1351–1767) did not lay out a clear system for determining a successor upon the death of a king. Rather, it provided a frame of reference from which the next king could be chosen. Typically, the new king would be either the late king's son born of a major queen or consort (; ), or one of his brothers. The Law also provided rules by which someone who was neither a son nor a brother of the deceased king could accede to the throne, should the situation or circumstances require it.