The temple could be possibly named after the City of Trai Trueng, a settlement in the area of Kamphaengphet on the Ping River (one of the major tributaries of the Chao Phraya River) established by a group of Thai from the area of Chieng Saen. The Burmese expelled them in the latter part of the twelfth century. The city became likely a vassal to Sukhothai in the middle of the thirteenth century. The town was said to be once the home of the mother of King U-Thong. The princess was expelled from the city by her father, the King of Trai Trueng, after marrying a commoner. They both left the city and established Thep Nakhon in 1319. In 1344, their son U-Thong became king and moved the capital to Ayutthaya in 1351. (Based on the work of Somdet Phra Wannarat, the Culayuddhakaravamsa). [2]
Engelbert Kaempfer, a medical doctor working for the Dutch VOC (Verenigde Oost-Indische Compagnie), on his visit to Ayutthaya in June 1690 CE, indicates Wat Trai Trueng on his sketch at 200 paces to the west of Wat Song Khon.
The site is indicated on a map drafted in the mid-19th century and on Phraya Boran Rachathanin's map of 1926 CE.
The ruin of Wat Trai Trueng is in geographical coordinate: 14° 21' 12.04" N 100° 33' 49.42" E.
