Phraya Sisunthonwohan

He is best known for writing the first modern textbooks on the Thai language, the Munlabot Banphakit  [th] series.

He joined the sangha after reaching the age of full ordination of twenty, and remained at the monastery for another eleven years before leaving the monkhood.

Under King Chulalongkorn (Rama V, r. 1868–1910), he became the head of the Royal Scribes Department, assuming the titles Khun Saraprasoet and later Phraya Sisunthonwohan, and also served as court poet, producing a large output of poetry.

He was known as an expert authority on the Thai language, and wrote several textbooks, the first of which, Munlabot Banphakit, was published in 1871.

He became head of the palace school, which Chulalongkorn established to pioneer modern education in the country, and taught the royal children, including Crown Prince Vajirunhis and the future king Vajiravudh.