Crown Prince Sado
Lady Hyegyeong's family initially enjoyed a close relationship with their royal in-laws and her father was employed in various official roles during his lifetime. Hong Bong-han even tutored Crown Prince Sado early in his daughter's marriage. Lady Hyegyeong recalls that, as early as 1745, Prince Sado was displaying strange behaviours, at several points losing consciousness. The marriage was consummated in the same month as Prince Sado's capping ceremony in 1749.