Si Inthrathit

Si Inthrathit (1188–1270), born Bang Klang Hao, was the founder and first king of the Sukhothai Kingdom. As chief of Bang Yang, he joined Khun Pha Mueang in rebelling against Angkor in 1238, defeating the Khmer general Khlon Lamphong and seizing Sukhothai.

Crowned under the Sanskrit name Si Inthrathit, he was honoured as Phra Ruang, a title borne by his dynasty. His son Ram Khamhaeng defeated a Khmer prince in elephant combat. On his death in 1270 his second son Ban Mueang succeeded him.