King Rama IV's princess read his poems called “Phra Apai Manee ". She was very pleased and she asked him to finish the poem. The King Rama IV promoted him to Phra Sunthorn Voharn. He spent the rest of life at peace until he died in 1855. He left behind a legacy of poems that have become famous over time because they describe Thai history. Thai people now study his poems to learn about the history of their country. His poetic works were honored by UNESCO.
He began the epic poem,