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Conflict between Ayutthaya and the Lan Na Kingdom (1430s)
In the 1430s, Siam's Ayutthaya and northern Lan Na repeatedly fought border wars and sieges between the Chao Phraya basin and the Chiang Mai basin, w…
Timeline
- 1431–1433Sukhothai–Nan corridor · ThailandAfter Borommaracha II consolidated control over the Sukhothai vassal region, Ayutthaya's armies marched north along the Nan River valley, clashing with Lan Na's border forces north of Sukhothai in an attempt to cut Lan Na's influence over the middle Chao Phraya River.
- 1434–1437Chiang Mai · Chiang Mai ProvinceUnder Samfang Kaen's rule, Lan Na organized counterattacks centered on Chiang Mai, with both sides repeatedly contending in the mountains and valleys of present-day northern Thailand. Lan Na failed to fully repel Ayutthaya but also prevented it from holding northern strongholds long-term.
- 1438–1440Ayutthaya · ThailandBy around 1440, neither side had won a decisive victory and the border largely returned to a stalemate. Ayutthaya turned to completing the final annexation of Sukhothai, while Lan Na gathered strength on the eve of Tilokaraj's accession, preparing for larger-scale conflicts to come.
Sources
- Wyatt, David K. A Short History of Thailand — David K. Wyatt (2003)
- The Cambridge History of Southeast Asia, Vol. 1 (1999)