Ong Boun

Phrachao Siribounyasan (Lao: ພຣະເຈົ້າສິຣິບຸນຍະສາຣ; Thai: พระเจ้าสิริบุญสาร; died November 1781), also known as Ong Boun (ອົງບຸນ), Bunsan or Xaiya Setthathirath III,[1] was the 3rd king of the Kingdom of Vientiane (r. 1767 to 1781).

Phrachao Siribounyasan
ພຣະເຈົ້າສິຣິບຸນຍະສານ
King of Vientiane
King of Vientiane
Reign1767 – 1781
PredecessorOng Long
SuccessorNanthasen
Born?
Vientiane, Lan Xang
DiedNovember 1781
Vientiane
Full name
Somdet Brhat Chao Dharma Adi Varman Maha Sri Bunyasena Jaya Setha Adiraja Chandrapuri Sri Sadhana Kanayudha
FatherSetthathirath II

Ong Boun was the second son of Setthathirath II. He was appointed the governor of Xiangkhouang in 1735. In 1767, his elder brother Ong Long died without heir. With the help of Phra Vo, Ong Boun crowned the new Vientiane king.

At that time, Vientiane was a vassal state of Burma.[2] The Burmese King considered Lao kingdoms as his base to expand further east. So, King Taksin of Siam decided to invade Lao kingdoms. In 1778, a Siamese army under Somdej Chao Phya Mahakasatsuek (later Rama I) invaded Vientiane.[3] After a siege of four months, the capital was captured by Siam.[4]

Ong Boun fled into jungle, finally, he decided to submit to the Siamese. Since then, Vientiane became Siamese dependency.[4] Most of his children were taken to Thonburi as hostages, including Nanthasen, Inthavong, Anouvong and Khamwaen. Khamwaen later became a concubine of Rama I.[5]

However, Ong Boun revolted against Siam in 1780, he killed the Siamese appointed governor Phraya Supho. In November 1781, he was captured by Siamese, and executed.

References
  1. Peter Simms, Sanda Simms. The Kingdoms of Laos: Six Hundred Years of History.CS1 maint: uses authors parameter (link)
  2. Tarling, Nicholas. The Cambridge history of South East Asia: From c. 1500 to c. 1800. 1. Cambridge University Press. p. 238. ISBN 978-0-521-66370-0. ISBN 0-521-66370-9.
  3. Wood, p. 268
  4. Wyatt, p. 143
  5. คึกฤทธิ์ ปราโมช, ม.ร.ว.. โครงกระดูกในตู้. กรุงเทพฯ : สำนักพิมพ์สยามรัฐ, พิมพ์ครั้งที่ 8 พ.ศ. 2547.

Biographies
Ong Boun
Kingdom of Vientiane
Born: ? Died: November 1781
Preceded by
Ong Long		 King of Vientiane
1767 – 1781		 Succeeded by
Nanthasen
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