Ratcha Buri

Ratcha Buri is a town in western Thailand, the capital of Ratcha Buri Province. Ratcha Buri town covers the entire Na Mueang Sub-district of Mueang Ratcha Buri District. As of 2017 CE, it had an estimated population of 36,169, down from 38,149 in 2005. The earliest evidence of settled habitation is that of the Dvaravati culture. At one time, it was believed that the early town was established on the coast of the Gulf of Thailand and that over time the coast had moved 30 km away to the south due to sedimentation coming down the Mae Klong River. However, geological and palynological investigations have shown that these early Dvaravati and proto-Dvaravati towns were all inland, at the edges of swamps when founded. Ratcha Buri remains an important commercial centre, however. Archaeological discoveries show that the area was already settled in the Bronze Age, and the town is known to have existed for at least two thousand years.
In the 13th century, Ram Khamhaeng seized Ratcha Buri and incorporated it into the Sukhothai Kingdom. Later it was an important trade centre in the Ayutthaya Kingdom. In 1768 CE, the Burmese (who had recently destroyed Ayutthaya) were thrown out of Ratcha Buri by King Taksin, and the town became part of Siam.
In 2000, a splinter group of Karen activists from Burma, known as God's Army, briefly took the Ratcha Buri hospital staff and patients hostage before the siege was relieved by the Thai army. [Source: Wiki]

Ayutthaya Historical Research