Mahinthrathirat มหินทราธิราช
King of Ayutthaya
King of Siam
Reign	15 April 1569 – 2 August 1569
Predecessor	Maha Chakkraphat
Successor	Maha Thammaracha(as vassal king)
Vassal King of Siam
Reign	18 February 1564 – before 12 May 1568
Predecessor	Maha Chakkraphat
Successor	Maha Chakkraphat(as sovereign king)
Emperor	Bayinnaung
Born	1539
Died	c. late 1569
Names Mahinthrathirat
House	Suphannaphum dynasty
Father	Maha Chakkrapat
Mother	Sri Suriyothai

Mahinthrathirat (Thai:มหินทราธิราช,pronounced[mā.hǐn.tʰa.rāː.tʰí.rât],Mahindrādhirāja; 1539–1569) was king ofAyutthaya 1564 to 1568 and again in 1569. He ruled his first reign as a vassal ofToungoo Burma before restoring his father in 1568 as the sovereign king. He became king again in 1569 after his father's death during the Third Siege of Ayutthaya by Toungoo forces. Mahinthrathirat was the last monarch of theSuphannaphum Dynasty as the kingdom fell to the Burmese in 1569.^{[1]: 41–42} Mahinthrathirat was known for his efforts to counter Burmese andPhitsanulok power by seeking alliance withSetthathirath ofLan Xang.

Prince Mahinthrathirat was a son ofMaha Chakkraphat and QueenSuriyothai. Mahinthrathirat had an elder brotherPrince Ramesuan theUparaja - then heir to the throne. In 1548,Tabinshweti marched the Burmese armies to invade Ayutthaya. Mahinthrathirat joined his family to battle the Burmese. However, his motherQueen Sri Suriyothai was killed in battle.^{[2]: 18–19}

Bayinnaung, brother-in-law of Tabinshweti, led theBurmese to invade Ayutthaya again in 1563. Bayinnaung laid the siege on Ayutthaya in 1564,^{[2]: 27–41} and installed Mahin as the vassal king on 18 February 1564.^{[3][note 1]}

Maha Thammarachathirat, the King ofPhitsanulok and Maha Chakkrapat's handful noble, had allied himself with Bayinnaung since the war of 1563. Maha Chakkrapat sought an alliance with Setthathirat of Lan Xang, through the marriage of his daughter Thepkasattri, but Maha Thammarachathirat informed Bayinnaung about the arranged marriage and alliances. Bayinnaung then kidnapped Thepkasatri on her way toVientiane. This forced Maha Chakkrapat to abdicate the throne to his son Mahinthrathirat, who planned a joint-attack on Phitsanulok with Setthathirat. Following that failed attack, Mahinthrathirat urged his father to return to regal power in the ensuing crisis.^{[2]: 42–49}

Bayinnaung then led the Burmese armies against Ayutthaya with support from Maha Thammarachathirat. The Burmese laid siege to Ayutthaya, during which, Maha Chakkrapat fell ill and died (on 15 April 1569, according to the Burmese chronicles).^{[note 2]} Mahinthrathirat assumed the throne again. In spite of several months of efforts, Ayutthaya stood the siege. Bayinnaung then bribed Phraya Chakri, a captured Siamese general, to be a spy. Mahinthrathirat embraced the returned general with trust and appointed Phraya Chakri commander of the Siamese defenses. Phraya Chakri was able to place the less-trained and incompetent troops in the front of the Burmese attack, and thus were easily defeated. The city was taken on 2 August 1569,^{[note 3]} after nine months.^{[2]: 42–62}

Bayinnuang installed Maha Thammarachathirat as the King of Ayutthaya on 29 September 1569,^{[note 4]} tributary to Pegu. Mahinthrathirat along with his family and the nobility were captured and taken to Pegu. Mahinthrathirat died in the same year on the way.^[2]: 63

• PrinceDamrong Rajanubhab (1928). Aung Thein (Translator), Chris Baker (ed.).Our Wars with the Burmese: Thai–Burmese Conflict 1539–1767 (2001 ed.). Bangkok: White Lotus.ISBN 974-7534-58-4.{{cite book}}:ISBN / Date incompatibility (help);|editor= has generic name (help)
• Eade, J.C. (1989).Southeast Asian Ephemeris: Solar and Planetary Positions, A.D. 638–2000. Ithaca: Cornell University.ISBN 0-87727-704-4.
• Harvey, G. E. (1925).History of Burma: From the Earliest Times to 10 March 1824. London: Frank Cass & Co. Ltd.
• Kala, U (1724).Maha Yazawin (in Burmese). Vol. 1–3 (2006, 4th printing ed.). Yangon: Ya-Pyei Publishing.
• Maha Sithu (2012) [1798]. Kyaw Win; Thein Hlaing (eds.).Yazawin Thit (in Burmese). Vol. 1–3 (2nd printing ed.). Yangon: Ya-Pyei Publishing.
• Royal Historical Commission of Burma (1832).Hmannan Yazawin (in Burmese). Vol. 1–3 (2003 ed.). Yangon: Ministry of Information, Myanmar.

• Suphannaphum dynasty
• Kings of Ayutthaya
• 1539 births
• 1569 deaths
• 16th-century monarchs in Asia
• Princes of Ayutthaya
• 16th-century Thai people

• Articles with short description
• Short description matches Wikidata
• Articles containing Thai-language text
• Pages with Thai IPA
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