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Ramathibodi I

Type Figure Region Siam Time c. 1314–1369 Also known as 乌通、Ramathibodi I、U Thong、Phra Chao U Thong

The founding monarch of the Ayutthaya dynasty of Siam, born U Thong. Around 1351 he proclaimed himself ruler at Ayutthaya on the lower Chao Phraya Ri…

Timeline

  1. c. 1330–1350Suphanburi · SuphanburiAccording to Siamese chronicles, U Thong was active in the upper Chao Phraya region in his early years, holding Suphanburi and other places, before moving south due to plague or political upheaval, laying the groundwork for later founding a capital downstream.
  2. 1351–1369Ayutthaya · AyutthayaIn 1351 he founded the city of Ayutthaya at the confluence of the Chao Phraya and Pasak rivers and proclaimed himself king under the title Ramathibodi I. During his reign he compiled the Three Seals Law, regulating land, debt, and inheritance, promoted Theravada Buddhism as the state religion, and both fought and made peace with neighboring Mon and Khmer powers.

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