Founded during the reign of King Pontarika, per Charles James Forbes Smith-Forbes. Legendary History of Burma and Arakan. The Government Press. 1882: 20.;the king's reign was 1028 to 1043 per Harvey, G. E. History of Burma: From the Earliest Times to 10 March 1824. London: Frank Cass & Co. Ltd. 1925: 368.
Great Britain. India Office; Hunter, William Wilson; Cotton, James Sutherland; Burn, Richard; Meyer, William Stevenson. Imperial gazetteer of India ... University of California Libraries. Oxford : Clarendon Press. 1907.