Worawongsathirat

Worawongsathirat วรวงศาธิราช
King of Ayutthaya kingdom
King of Siam
Reign	1548
Predecessor	Yotfa
Successor	Maha Chakkraphat
Died	11 November 1548 Pla Mo Canal (Thai: คลองปลาหมอ), beside Sa Bua Canal (Thai: คลองสระบัว), Ayutthaya
Spouse	Si Suda Chan
House	Uthong Dynasty

Worawongsathirat (Thai: วรวงศาธิราช) was a usurper in the Ayutthaya Kingdom, ruling for only 42 days in 1548 before being assassinated. Siamese chronicles relate that Worawongsathirat attainted the crown — his kingship is not accepted by most traditional historians.

His birth-name was "Bun Si" (or Bun Sri) (Thai: บุญศรี), and he was a Brahmin. Upon entering service to the crown as keeper of Ho Phra Thep Bidon (หอพระเทพบิดร), a cloister on the palace grounds (with duties such as organising various rites and ceremonies,) Bun Si was then styled Phan But Si Thep (พันบุตรศรีเทพ). He was later promoted to the rank of Khun and styled Khun Chinnarat (ขุนชินราช); this was perhaps even as he was having an adulterous affair with Si Suda Chan (or Sri Sudachan ศรีสุดาจันทร์), a first-class concubine of King Chairachathirat.

Si Suda Chan was not a real name of a person, it was the title of one of the four first-class concubines, which were Insuren, Si Suda Chan, Inthrathewi and Si Chula Lak. The real name of King Chairachathirat's consort was not mentioned in the history.

King Chairachathirat died in 1546, possibly poisoned by her hand. Their young son, Phra Kaewfa, ascended the throne as King Yodfa with his mother as regent. (Whether Si Suda Chan and Khun Chinnarat had their affair before or after the ascension of Yotfa is subject to debate. Jeremias van Vliet's memories told that they met after the coronation of Yotfa which contrasted to those of Fernão Mendes Pinto.)

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