Wat Phananchoeng was built in 1324, 26 years before King U-Tong founded Ayutthaya.
The detail in the Northern royal Chronical indicated that King Sainampheung of Krung Ayothaya constructed Wat Phananchoeng in memory of Nang Soidokmak(Princess Chinese died on a junk in front of the temple) in 1044.