Starting in the 7th century Lampang was part of the Dvaravati period Hariphunchai Kingdom of the Mon. In the 11th century the Khmer Empire occupied the Lampang area, but it was King Mengrai of Lanna who incorporated the complete Haripunchai Kingdom into his kingdom in 1292. Lampang or Nakhon Lampang or Lakhon, was under Burmese rule after the fall of Lanna Kingdom from the 16th century to 18th century. During the uprising against Burmese rule by Siam's new kings in the late-18th century, a local Lampang leader became Siam's ally. After the victory, the leader was named the ruler of Chiang Mai, the former center of Lanna, while his relative ruled Lampang. The city continues to be one of the most important economic and political centers in the north. Lampang became a province of Thailand in 1892.