The traditional list of the ancient Tibetan rulers consists of 42 names. The first 26 rulers may belong to the realm of legend, as there is insufficient evidence of their existence, but modern scholars believe that the kings from no. 27 to no. 32 were historical. The rulers from no. 33 to no. 42 are well documented in many reliable Tibetan, Chinese and foreign sources. A unified Tibetan state did not exist before the times of the kings number 31, 32, and 33.
