Sidoktaya
Sidoktaya is one of the oldest ancient towns in Myanmar. It is established by Prince Yazakumar (a. Min Zaya Khittaya or Min Thiri Khittaya) in Year 460 (Myanmar Era) (about 1098 A.D.). Now it is over 900 years of age. there are many archaeological places including Si-kyek-taung Pagoda, Aung-kyar Thiri Pagoda, and Sutaungpyi Pagoda. The ancient city wall had been found buried in some places.
Burmese chronicles
Inscriptions are considered most accurate of all Burmese historiographic material because they are less susceptible to copying errors due to their longevity. A typical stone inscription lasts many centuries while the average life of a palm leaf record is only 100 to 150 years. Though some stone inscriptions too were recast, and some copying errors (mostly in spelling) have been identified, they do not show the same degree of copying errors of palm-leaf records, many of which were recopied many times over. The oldest extant inscriptions in Burma are dated to the 3rd and 2nd centuries BCE in Pyu city-states. Inscriptions were still "rare in the 5th to the 10th centuries but from the 11th, there is literally a deluge of them". The earliest original inscription in Burmese is dated 1035 CE; an 18th-century recast stone inscription points to 984 CE.