Siem Reap
The traditional tale claims that King Ang Chan of Cambodia tried to assert greater independence from Siam, which was then struggling internally. The Siamese king Chairacha had been poisoned by his concubine, Lady Sri Sudachan, who had committed adultery with a commoner, Worawongsathirat, while the king was away leading a campaign against the Kingdom of Lan Na. Sudachan then placed her lover on the throne. The Thai nobility lured them outside the city on a royal procession by barge to inspect a newly discovered white elephant. After killing the usurper, along with Sudachan and their new-born daughter, they invited Prince Thianracha to leave the monkhood and assume the throne as King Maha Chakkraphat (1548–1569). With the Thais distracted by internal problems, King Ang Chan attacked. He seized the Siamese city of Prachinburi in 1549, sacking the city and making slaves of its inhabitants. Only then did he learn that the succession had been settled and that Maha Chakkraphat was the new ruler. Ang Chan immediately retreated to Cambodia, taking captives with him. King Maha Chakkraphat was furious over the unprovoked attack, but Burma had also chosen to invade through Three Pagodas Pass. The Burmese army posed a much more serious threat, as it captured Kanchanaburi and Suphanburi. It then appeared before Ayutthaya itself.