Candraraja
Candrarāja was a Siamese monarch mentioned in the Ayutthaya Testimonies as the ruler of the Sukhothai Kingdom. He was born in the year 516 of the Chula Sakarat Era to Sirisudhārājadevī, a queen consort of Suryaraja of Vicitraprakāra, identified with the present-day Kamphaeng Phet. Sūryarāja was a descendant of King Padumasuriyavamsa. Candrarāja had two queen consorts, Sūryadevī and Nang Nak. The latter, who potentially was the Tai princess, bore an elder prince named Phra Ruang, also known as Si Inthrathit, while another consort gave birth to a younger prince, likewise named Phra Ruang, and one princess named Suvaṇṇadevī. The elder prince was appointed to govern Mueang Bang Yang, a polity that had formerly served as the power base of his grandfather's counsin, Pra Poa Noome Thele Seri. He would later ascend the throne as the sovereign of the Sukhothai Kingdom in 1238. In contrast, Phra Ruang IV or Si Intharathit, is recorded in the Legend of Sawankhalok as having an elder brother, Phra Ruang III, who ruled Mueang Fang, identified with present-day.
Candrarāja succeeded his father at Vicitraprakāra at the age of 30, in the year 546 of the Chula Sakarat Era. Subsequently, he moved northward to reconstruct Sukhothai, establishing it as his new political and administrative center. He then ceased the payment of tribute to the suzerain polity of Indaprasthanagara, following the counsel of his elder son, Si Inthrathit. This defiance precipitated hostilities between the two realms; however, the Sukhothai forces, commanded by Si Inthrādhit, achieved victory. Thereafter, Indaprasthanagara refrained from interfering in Sukhothai's internal affairs. During this period, Sukhothai's southern neighbor, the polity located in the Phraek Si Racha region known as Chen Li Fu, also asserted its autonomy by independently dispatching tribute to the Chinese imperial court in 1200 CE. It is also recorded that Lavo was under his authority.
Candrarāja's reign concluded in the year 576 of the Chula Sakarat Era. Accounts of subsequent events vary across sources. The Ayutthaya Testimonies assert that he was succeeded directly by his son, Phra Ruang IV or Si Inthrathit; however, this narrative contrasts with the more widely accepted interpretation derived from the Wat Si Chum Inscription, which records that the Mon monarch named E Daeng Phloeng ruled Sukhothai following Candrarāja's death, and was later overthrown in 1219 by Sri Naw Nam Thom and his son Pha Mueang of Mueang Chaliang.