Suvacanaraja

Suvacanarāja (, ), also known as Pasujakumāra , is identified in the Northern Chronicle as an 11th-century Mon monarch who ruled Mueang Chaliang (modern Si Satchanalai). He ascended the throne in 1052 following the death of his elder mixed Mon–Tai brother, Arunaraja. The conflict concluded with a peace settlement, formalized through the marriage of his daughter Padumadevī to Śrīdharmatripiṭaka, thereby establishing an dynastic alliance between the two polities. In 1106, Śrīdharmatripiṭaka relocated to Phitsanulok, where he established his authority and remained until his death.

Kesariraja, born of Suvacanarāja’s daughter and ruling at Lavo, is further recorded as having married Suladevi , a daughter of another ruler of Si Satchanalai, whose regnal name is not specified. Their union produced a son, Duangkrian Krishnaraja , who subsequently married Rajadevi , a Xiān princess under Phra Chao Luang. Duangkrian Krishnaraja later ruled Kishkindha ( or ), a polity under the authority of Lavo in the present-day Ban Mo district, Saraburi province.

In the mid-12th century, a notable political shift occurred at Mueang Chaliang, marked by the appearance of the Xiān monarch Uthong I, who is recorded as having migrated southward around 1156/1157 to support his elder brother, Pra Poa Noome Thele Seri of Sukhothai–Nakhon Thai. The two brothers are further described as having advanced into the western Menam valleys, where they consolidated their authority from the 1160s onward. At Mueang Chaliang, the Northern Chronicle, following the passage concerning Uthong I, records the name of Pattasucaraja as ruler of the polity. His son and successor, Dharmatriloka, is explicitly identified as a relative of the ruler of Oghapurī (; modern Phichit), a polity said to have been established in the 8th century by a descendant of Padumasūriyavaṃśa, who is likewise noted as the progenitor of Uthong I and Pra Poa Noome Thele Seri.