Ang Thong was originally known as Muang Wiset Chai Chan. The original location of Muang Wiset Chai Chan was on the Noi River. Muang Wiset Chai Chan was a frontier outpost of Ayutthaya during the war with the Burmese, and the site of a Burmese encampment en route to the Battle of Bang Rachan in Singburi. During the Thonburi period, Muang Wiset Chai Chan was moved to the left bank of the Chao Phraya River at Ban Bangkaeo and was renamed "Muang Angthong."[1]