Wat Putthai Sawan

In 715, a year of the serpent, fifth of the decade, on Thursday, the first day of the waxing moon of the fourth month, at two nalika and five bat in the morning, the King was pleased to order that a holy monastery, with a preaching hall and a great holy reliquary, be established and bestowed upon it the name of Phutthaisawan Monastery. (The Royal Chronicles of Ayutthaya)