Yotfa
King of Ayutthaya
Yotfa (Thai: ยอดฟ้า) or Kaeofa (Thai: แก้วฟ้า) was the 14th Ayutthayan king from the Suphannaphum Dynasty (c. 1536 – 10 June 1548)
Yotfa was a son of King Chairachathirat (พระไชยราชาธิราช) and his consort Lady Si Suda Chan (ท้าวศรีสุดาจันทร์). He reigned from 1546 until his murder in 1548.
Birth
Yotfa was born around 1536. He was the son of King Chairachathirat and Lady Si Suda Chan, the Consort of the Left. He had one brother, Prince Sisin (พระศรีศิลป์), who was six years younger than him.
Reign
After King Chairachathirat's death in 1546, Prince Yotfa succeeded to the throne at the age of eleven. His mother, Lady Si Suda Chan, then served as the regent. To avoid political conflicts with Lady Si Suda Chan, Prince Thianracha (พระเฑียรราชา), the most senior member of the royal household, became a monk and stayed at Ratchapraditsathan Temple (วัดราชประดิษฐาน) throughout the reign of Yotfa.
Jeremias van Vliet recorded that Yotfa was fond of riding a horse along the fields, watching elephant duels, learning to use weapons and studying political science, and that his reign saw abundance of agricultural products.
This brief starts where responsible research should: with the source description of “Yotfa” as king of Ayutthaya. Everything that follows is an evidence route, not borrowed authority.
Why this record matters
The subject matters to the people & ideas register because the source frames it as king of Ayutthaya. Its deeper value depends on whether names, dates, institutions and citations support that framing.
Biographical claims are most persuasive when dates, appointments and relationships can be traced to records created close to the events described. The source revision retrieved here is dated Jun 22, 2026. The linked authority identifier is Q889180. 1 of 1 selected statements include explicit references; 1 carry qualifiers and 0 use preferred rank. The first chronological checks are 1536, 1548 and 1546.
A concise life account rarely captures disputed attribution, private networks or the changing language used to describe a career. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
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Three-step research path
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This entry incorporates text from “Yotfa” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.