Sisavang Vatthana(Lao: ເຈົ້າສີສະຫວ່າງວັດທະນາ) or sometimes Savang Vatthana (full name Samdach Brhat Chao Mavattaha Sri Vitha Lan Xang Hom Khao Phra Rajanachakra Lao Parama Sidha Khattiya Suriya Varman Brhat Maha Sri Savangsa Vadhana) (13 November 1907 − 13 May (?), 1978; or perhaps as late as 1984) was the last king of the Kingdom of Laos. He ruled from 1959 after his father's death, until his forced abdication in 1975. Savang Vatthana proved unable to manage a country in political turmoil. His rule ended with the takeover by the Pathet Lao in 1975, after which he and his family were sent to a re-education camp by the new government.
Read more about Sisavang Vatthana: Early Life, King of Laos, Abdication and Death, Issue