Prasat Thong

Prasat Thong, a nobleman, seized the throne of Ayutthaya from King Chetthathirat. He established the Prasat Thong dynasty, which ruled Siam for the remainder of the 17th century.

Prasat Thong ordered the construction of Wat Chaiwatthanaram, a Buddhist temple in Ayutthaya. The temple was built on the site of his former residence and became a major religious monument.

Prasat Thong crushed a rebellion by Japanese mercenaries and traders in Ayutthaya. The uprising was led by Yamada Nagamasa's son, and its defeat ended Japanese influence in Siam for centuries.

Prasat Thong led a military campaign into Cambodia, capturing the capital Oudong. The campaign reasserted Siamese suzerainty over Cambodia and brought back many captives to Ayutthaya.