Crown Prince Sado was born Prince Jangheon, the second son of the Korean king Yeongjo. Due to the prior death of his older half-brother Crown Prince Hyojang, the new prince was the probable royal heir. However Prince Sado was not given an opportunity to reign. At the age of 27, he was executed by order of his father, and died of starvation by being confined in a rice chest. His father gave him the posthumous title Sado, meaning "Thinking of with great sorrow."