Mahinthrathirat was the King of Ayutthaya kingdom 1564 to 1568 and again in 1569. Mahinthrathirat was the last monarch of the Suphannaphum Dynasty as the kingdom fell to the Burmese in 1569.4142 Mahinthrathirat was known for his efforts to counter Burmese and Phitsanulok power by seeking alliance with Setthathirath of Lan Xang.
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Source: Wikipedia