凯山·丰威汉
Prince Souphanouvong (13 July 1909 – 9 January 1995) unlike his half-brothers, Souvanna Phouma and Phetsarath Ratanavongsa, whose mothers were of royal birth, his mother was a commoner, Mom Kham Ouane. He was the figurehead President of Laos from December 1975 to August 1991. A staunch communist and the leader of the Pathet Lao, was supported by Kaysone Phomvihane (later Prime Minister and President of the LPDR) and the North Vietnamese. By 1972, the Pathet Lao found it unacceptable to form a coalition with rightist members, mostly military generals and the rich and powerful Na Champassak and Sananikone families.