Wat Maheyong is located outside the city island in the Hantra Sub-district of Ayutthaya, which is part of the ancient area of Ayothya, inhabited before the establishment of Ayutthaya in 1351 CE. This ancient Ayothya community was situated on the stretch of land formed by Khlong Hantra, Khlong Ban Bat, Khlong Kramang and the Pa Sak River.
History
Following the Luang Prasoet chronicles, the monastery was built in 1438 CE at the start of the reign of King Borommaratcha II (1424-1448 CE) of the Suphannaphum Dynasty (also known as Chao Sam Phraya). Later Royal Chronicles of Ayutthaya (written after the fall of Ayutthaya) changed that date and put the temple's construction in 1424 CE, a year generally accepted as King Borommaratcha's throne ascendancy.
"In 800 [Chulasakarat], a year of the horse, when King Boromracha II had built the Maheyong Monastery he ascended the royal throne." [1]
The Royal Chronicles of Ayutthaya mention that Chao Phraya Maha Sena had his stockade set up in the Hantra plains during the war with Burma in 1563-1564 CE. His stockade was attacked by the Burmese troops of the Maha Uparat, but he was able to withstand the first attack. In the second attack, he had to give terrain and was driven with his men into the Hantra Canal (where many wounded drowned) and crossed over to the Maheyong Monastery.
“The King of Hongsawadi commanded that the Maha Uparacha be ordered to approach and take the stockades on the Hantra Plain so that plans could be made for approaching Ayutthaya. At dawn on the next day, Tuesday, the third day of the waning moon in the fourth month, the Maha Uparacha took his soldiers to attack the stockade of Caophraya Maha Sena. Caophraya Maha Sena and his officers fought capably and the enemy was unable to take it by storm. The Maha Uparacha was displeased. Turning his elephant to stand directly in front of, and about three sen from, the stockade, he had it announced to his officers that, "If you do not take the stockade at this time, I will cut off your heads and have them impaled." The officers were afraid and, driving the massed soldiers carrying swords and shields in to reinforce the attack, they were able to take the stockade by storm. Caophraya Maha Sena, his officers and his men fled into the canal and crossed over to the Maheyong Monastery side. Those of the wounded who drowned in the water were numerous. The Maha Uparacha returned with the army to his stockade. Then he went to an audience with the King of Hongsawadi and made his report on all the particulars involved in the conquest of the stockade.” [2]
During the Burmese war in 1568-1569 CE, the main army of King Bayinnaung was encamped at the Maheyong Monastery. He set up his pavilion at the temple, and it was here that King Mahin of Ayutthaya (King Mahinthrathirat) (reign 1568-1569 CE) presented himself to the Burmese King after the fall of the capital on 30 August 1569 CE. King Mahin and the royal family were taken captive and brought to Pegu. Maha Thammaracha of Phitsanulok, who joined forces with Bayinnaung against Ayutthaya, was set up as king. King Mahin died of fever on the way to Burma. “As soon as his army and naval forces were all assembled, the King of Hongsawadi issued orders for all his forces to lay siege to the Capital: The army of the Uparat and the army of Prince Thammaracha to the front ramparts in the east, the army of the King of Ava to encamp to the south, the armies of the Phraya of Thala, of the Thai Yai princes and of the Chiang Mai phraya, sæn and luang to encamp to the west, and the armies of the Phraya of Bassein, of the Phraya of Tòngu, of Phraya Aphaikhamani, of the Phraya of Lao, the ruler of Martaban, Phraya Phataba and Phraya Phataboet to encamp to the north. The main army itself moved in to encamp at Maheyong Monastery.” [3]
“At that moment the Uparat and Prince Thammaracha proceeded in and halted their royal elephants in front of the Royal Palace. So King Mahin, Lord of the Realm, seeing that Ayutthaya had fallen to the King of Hongsawadi, proceeded forth with his royal palanquin to Prince Thammaracha in front of the Royal Palace. So the Uparat and Prince Thammaracha escorted King Mahin, Lord of the Realm, out to be presented to the King of Hongsawadi at his pavilion at Maheyong Monastery.” [4]
Wat Maheyong underwent significant restoration in the reign of King Thai Sra (1709-1732 CE). The restoration started in 1709 CE, and it took more than three years to complete it. The King had a royal residence built south of the temple to follow its restoration and administered royal affairs from that place. After the temple's restoration in 1713 CE, it was dedicated and celebrated with a week-long festival. Wat Maheyong, restored and enlarged, became one of the most significant monasteries before the fall of Ayutthaya.
"In that year of the ox, first of the decade, [1709 CE] a holy royal command was issued to have artisans restore the Monastery of the Mound. His Majesty constantly went in holy royal procession to have the artisans perform the work on that monastery. Occasionally, however, His Majesty stayed at a holy residence beside the Monastery of the Mound, sometimes for one month, sometimes for two months, and administered royal affairs in that place. It was more than three years before that monastery was completely finished." [5]
"In that year of the serpent, fifth of the decade, [1713] the King had the Monastery of the Mound dedicated. The King manifested His holy royal faith by performing holy royal acts of merit in great numbers and by making holy royal gifts of the paraphernalia of the eight requisites and of a variety of alms goods to one thousand holy clerics, following holy royal tradition in the past a festival was held to celebrate for seven days to finish and complete that dedication." [6]