Crown Prince Sado
During his accession, he also issued a royal decree that his mother, Lady Hyegyeong, be a Dowager Queen since his father, her husband, was supposed to be the King before him. Thus, she became the Queen Dowager, the widow of Crown Prince Sado. From then on, King Jeongjo experienced many turbulent periods, but overcame them with the aid of Hong Guk-yeong, Kim Chong-su.