Founded during the reign of King Pontarika, per Charles James Forbes Smith-Forbes (1882). Legendary History of Burma and Arakan. The Government Press. p. 20.; the king's reign was 1028 to 1043 per Harvey, G. E. (1925). History of Burma: From the Earliest Times to 10 March 1824. London: Frank Cass & Co. Ltd. p. 368.