Person

Borommarachathirat I

r. 1370–1388 · 14th century · Also known as Khun Luang Pa-ngua, Khun Luang Pa-ngua of Suphanburi

Borommarachathirat I, earlier Khun Luang Pa-ngua, ruler of Suphanburi, was king of Ayutthaya from 1370 to 1388. A brother-in-law of U Thong, the founder of Ayutthaya, he seized the throne from U Thong's son Ramesuan and established the Suphannaphum dynasty in power. He campaigned repeatedly against Sukhothai, which became a tributary of Ayutthaya in 1378.

Borommarachathirat I
Image: FrameHotep · CC BY 4.0 · Wikimedia Commons

Mentioned in 1 state history

Suphannaphum

See also

Cite this entry
APA
The Epoch Institute. (2026). Borommarachathirat I. In The Epoch Institute Encyclopedia. https://the-epoch-institute.org/encyclopedia/borommarachathirat-i
MLA
“Borommarachathirat I.” The Epoch Institute Encyclopedia, The Epoch Institute, 2026, https://the-epoch-institute.org/encyclopedia/borommarachathirat-i. Accessed .
Chicago
The Epoch Institute. “Borommarachathirat I.” The Epoch Institute Encyclopedia. 2026. https://the-epoch-institute.org/encyclopedia/borommarachathirat-i.
Harvard
The Epoch Institute (2026) ‘Borommarachathirat I’, The Epoch Institute Encyclopedia. Available at: https://the-epoch-institute.org/encyclopedia/borommarachathirat-i (Accessed: ).

Last reviewed October 2026Random entry ↻