Srisiddhi Thongjaya
Prince Srisiddhi Thongjaya, the Prince Siridhaj Sangkas was a Prince of Siam. As a son of King Mongkut and Chao Chom Manda Bua, he was a member of Siamese royal family.
His mother was a daughter of Chao Phraya Nakhon Noi, a son of King Taksin. He was given full name as Phra Chao Borom Wong Ther Phra Ong Chao Srisiddhi Thongjaya Krom Khun Siridhaj Sangkas.
He had 4 siblings: 1 elder brother, 1 younger sister, and 2 younger brothers:
- Prince Chalermlaksanaloet
- Princess Oradaya Debkanya
- Prince Vadhananuwongse