Prince Boun Oum was the son of King Ratsadanay, and was the hereditary prince of Champassak and also Prime Minister of the Kingdom of Laos from March 1949 to February 1950 and again from December 1960 to June 1962.
Boun Oum
Funeral plate at Trivaux Cemetery in Meudon, France
The Kingdom of Champasak or Bassac, (1713–1904) was a Lao kingdom under Nokasad, a grandson of King Sourigna Vongsa, the last king of Lan Xang and son-in-law of the Cambodian King Chey Chettha IV. Bassac and the neighboring principalities of Attapeu and Stung Treng emerged as power centers under what was later to be described as the Mandala Southeast Asian political model.
The Phra Phuttha Butsayarat or Phra Luk Buddha, palladium of the Kingdom of Champasak, Laos. The Phra Butsayarat was brought to the Kingdom of Lan Xang by King Setthathirath from the Kingdom of Lan Na in the 16th century, with several other significant statutes. In the 19th century, the image was taken by the Kingdom of Siam to Bangkok. It currently resides in the Phra Buddha Rattanasathan (พระพุทธรัตนสถาน) ordination hall at the Grand Palace in Bangkok.