E Daeng Phloeng

E Daeng Phloeng (Thai: อีแดงเพลิง) was a 12th-century monarch mentioned in the Wat Si Chum Inscription as a ruler of the Sukhothai Kingdom. His political authority appears to have been confined predominantly to the territorial bounds of the ancient Sukhothai site, extending westward toward Mueang Rahaeng (เมืองระแหง), which corresponds to the present-day Mueang Tak district. The precise identification of E Daeng Phloeng, including his historical role and leadership position, remains a subject of scholarly debate, with phonetic analyses indicating a possible Mon origin.

In 1219, E Daeng Phloeng was overthrown by Sri Naw Nam Thom, a Tai monarch from Mueang Chaliang, who subsequently established dual sovereignty over Mueang Chaliang and Sukhothai. Following this event, Sri Naw Nam Thom appointed his son, Pha Mueang, as ruler of Mueang Rad (เมืองราด), the exact location of which remains debatable, potentially in the present-day Lom Sak district. The kingdom under the lead of Sri Naw Nam Thom and Pha Mueang significantly expanded by consolidating several other polities.