According to historical chronicles of Muang Yasothon,
Phra Chao Voravongsa, and his followers in 2340 B.E. were migrating
to settle down with the governor of Champasak. Along the way, they
stopped at Dong Phi Singh and decided to make their home there as
it was found to be an approciate site which was later named Ban Ta
Singh or Muang Ta Singh. In 2357 B.E. King Rama II issued an edict
to upgrade the settlement into a town. Muang Ta Singh, reporting direct
to Bangkok. The rank of Phra Rachavongsa was given to the governor.
The town was subsequently elevated into a province under a Revolutionary
Order No.70 on February 6,2515. The province was made up of the following
districts, Yasothon, Kam Khuan Kaew, Maha Chaichana, Pa Tiew, Lerng
Nok Tha and Kud Chum (all formerly in Ubon Ratchathani), and officially
came into existence on March 1,215 (1972).