Sukhothai Under The Pra Ruang Dynasty
Khun Bangklanghao and Khun Pha Muang who held the governorship of Ban Yang and Rad respectively decided to join their forces together and to overthrow the Khmer rule. Through the support of the Thais, Khun Bangklanghao was proclaimed King Si Intharathit of Sukhothai. Thus was born the Thai Kingdom of Sukhothai in 1238.