Wikipedia
Chetthathirat
Chetthathirat or Borommaracha II (; c. 1613 – 1629) was the eldest son of King Song Tham and older brother of Athittayawong and Phra Srisin or Phra Phanpi Srisin , all three of the House of Sukhothai. In childhood he was known as Chetthakuman (พระเชษฐากุมาร), meaning 'Chettha the Infant', or simply Chettha.