 Rear Palace

Rear Palace ( ) was a royal residence that belonged to the deputy Uparaja of Siam, who held the title Krom Phraratchawang Bowon Sathan Phimuk ().Around the time of Luang Sorasak's appointment, King Phetracha also appointed a Third King, "Krom Phraratchawang Bowon Sathan Phimuk" or "Rear Palace".