Princess Somanass was a daughter of Prince Lakkhananukhun (son of Nangklao) and Ngiu Suvarnadat.
Since her father, as a son of the king and of a royal concubine, was Phra Ong Chao (second-rank prince), Somanass was destined to be Mom Chao (third-rank princess).
However, King Nangklao (Rama III) who was her grandfather, specially granted her the title of Phra Ong Chao (second-rank princess).
In 1851, upon his coronation, Mongkut married Princess Somanass, making her the queen.
In 1852, she gave birth to a prince, Somdet Chaofa Somanass, but he died shortly after he was born, Queen Somanass herself died two months later.