Analysis of information sources in references of the Wikipedia article "U Thong district" in English language version.
There is an old city ... called by the people Müang U Thong (the city of King U Thong) and there is a tradition that Thao U Thong reigned over this city until an epidemic broke out and the people died in great numbers. He then abandoned the city and turning to the East looked out for another place to establish the capital; but the epidemic did not abate. He then crossed the Suphan (Tachin) river to escape the ravages of the epidemic, and even at the present time near the Suphan river there is a place called "Tha Thao U Thong" 'i.e.' the crossing of King U Thong.
