Place of Birth: Cambridge, Massachusetts, United States
Date of Birth: December 5, 1927
Ethnicity: Thai, some Chinese, some Mon
Bhumibol Adulyadej, also known as Rama IX, is the King of Thailand, having served in that capacity since 1946. He is the son of Mahidol Adulyadej and Srinagarindra. He is married to Sirikit Kitiyakara.
Bhumibol’s paternal grandfather was Chulalongkorn (also known as Rama V, the son of Mongkut, also known as Rama IV, and Debsirindra). Mongkut was the son of Phra Phutthaloetla, also known as Rama II, and Sri Suriyendra. Debsirindra was of Mon descent, and was the daughter of Sririwongse, the Prince Matayaphithak, and Mom Noi Siriwongse Na Ayudhaya. Mom is a title, which means “a commoner married to a prince”.
Bhumibol’s paternal grandmother was Savang Vadhana (the daughter of Mongkut and Piam Sucharitakul). Through Mongkut, Chulalongkorn and Savang Vadhana were half-siblings. Piam Sucharitakul was the daughter of Luang Asasamdaeng, also known as Taeng Sucharitakul, and Thao Sucharitthamrong, also known as Nak Sucharitakul. “Luang” and “Thao” are titles, which mean “Lord” and “Dame”, respectively.
Bhumibol’s maternal grandparents were Chu Chukramol (the son of Chum) and Kham Chukramol (the daughter of an unknown father and Pha).
Sources: Genealogy of Bhumibol Adulyadej – http://www.geni.com