Crown Prince Sado(思悼世子)
Sadoseja (1735-1762) was the second son of Yeongjo (1694-1776), the 21st king of Joseon, who was locked inside a wooden chest and left to die as a victim of political sacrifice, and later deified and worshipped by the people.
Crown Prince Sado’s birth name was Yi Seon and was named at age two as the heir to the throne. He was a brilliant child, talented in reading and writing, showing keen interest in politics as well, and starting at the age of fifteen, ruled as prince-regent. However, he grew distant from the Noron (Old Doctrine) faction, then in power, which led to political pressure and slander, and eventually, his murder.
Many heroes who have met unjust and tragic deaths are deified in folk religion. In Korean shamanism, Crown Prince Sado is also worshipped by the name Dwijudaewang, or Wooden Chest King.