Siamese chronicles relate that Worawongsathirat attainted the crown — his kingship is not accepted by most traditional historians.
Upon entering service to the crown as keeper of The Royal Pantheon (หอพระเทพบิดร), a cloister on the palace grounds (with duties such as organising various rites and ceremonies,) Bunsi was then styled Phan Butsithep (พันบุตรศรีเทพ).
Jeremias van Vliet's memories told that they met after the coronation of Yotfa which contrasts to those of Fernão Mendes Pinto.
In this interpretation, both Si Sudachan and Worawongsathirat, being of the deposed Lawo-Ayothaya clan, intended to restore it to the Ayutthayan throne.
Those executing the coup, Khun Phirenthorathep and his fellow retired officers gave the throne to Prince Thienracha, who was proclaimed King Mahachakkraphat, meaning "Great Emperor".