Archival Overview
Fourth monarch of Siam (1851–1868), scholarly Buddhist reformer and astronomer who opened Siam to modern science and international diplomacy, accurately calculated the total solar eclipse of 1868, and laid the foundations for Siamese modernization.
Biographical Record
Prince Mongkut (1804–1868) spent twenty-seven years as a Buddhist monk before ascending the throne, mastering Sanskrit, Pali, Latin, English, astronomy, and Western mathematics, and founding the reformed Thammayut Nikaya Buddhist monastic order.
Ascending the throne in 1851, Mongkut signed the landmark 1855 Bowring Treaty with Great Britain, establishing free trade while avoiding colonial subjugation. An accomplished astronomer, Mongkut calculated the exact path and timing of the August 18, 1868 total solar eclipse at Wakhor, inviting French and British scientists to verify his calculations, during which he contracted fatal malaria.
Key Life Milestones
Signing of the Bowring Treaty
Opened Siam to modern global commerce, preventing British military intervention.
The Wakhor Solar Eclipse Calculation
Mathematically predicted the total solar eclipse, celebrated as the Father of Modern Science in Thailand.
Memorial Guestbook & Tributes
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Final Resting Place
Perpetual MemorialBangkok, Thailand