About Souphanouvong
Prince Souphanouvong, nicknamed the Red Prince, was along with his half-brother Prince Souvanna Phouma and Prince Boun Oum of Champasak, one of the "Three Princes" who represented respectively the communist (pro-Vietnam), neutralist and royalist political factions in Laos. He was the President of Laos from December 1975 to October 1986. In August 1950, Souphanouvong convened the first congress of the Lao Freedom Front (Neo Lao Issara), more generally known as the Pathet Lao, which served as the vehicle for the communist challenge to French rule. As a result, Souphanouvong joined the Indochinese communist movement and became one of the leaders of the Lao Issara national liberation movement. Souphanouvong joined the Lao People's Party (which later became the Lao People's Revolutionary Party) in 1955, but was not part of its leadership.
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.