In 1239, the Tai governor of Sukhothai rebelled and declared independence from Lavo – giving birth to the Sukhothai Kingdom. In  Thai chronicles Lavo is called “ Khmer ”, and during the 13th century the Lavo kingdom shrank swiftly due to the expansion of Sukhothai under Ram Khamhaeng the Great, retreating to its heartland around Lavo and Ayodhaya. The Kingdom of Lavo, Lo-hu, sent embassies to China between 1289 and 1299. 
In 1239, the Tai governor of Sukhothai rebelled and declared independence from Lavo – giving birth to the Sukhothai Kingdom. In Northern Thai chronicles Lavo is called “ Khom ”, and during the 13th century the Lavo kingdom shrank swiftly due to the expansion of Sukhothai under Ram Khamhaeng the Great, retreating to its heartland around Lavo and Ayodhaya. The Kingdom of Lavo, Lo-hu, sent embassies to China between 1289 and 1299. in 1349 Hsien people of Sukhothai become united with the people of Lo-hu, the new kingdom named Hsien Lo by the chinese.
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Northern
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Khmer
Khom
A
in 1349 Hsien people of Sukhothai become united with the people of Lo-hu, the new kingdom named Hsien Lo by the chinese.