Modern Kalasin was established during the Ratanak
escaped from the left bank of the Mekong River and settled beside the Pao River, which was called ‘Ban
Kaeng Samrong.’ Thao Somphamit then sent tribute
who later promoted Ban Kaeng Samrong to city status and renamed it ‘Kalasin’ or ‘Mueang Nam Dam’ (black
water town). The king also appointed Thao Somphamit as ‘Phraya Chaisunthon,’ first ruler of Kalasin.