Yi Ok-ha was born on 13 June 1511, as the eldest child and only daughter of King Jungjong and Queen Janggyeong.
At the age of 4, she lost her mother to postpartum sickness after the birth of her younger brother, Crown Prince Yi Ho, on March 10, 1515.
[5] On May 6, 1531, at the age of 19, Princess Hyohye gave birth to a daughter, named Kim Seon-ok, but she died not long after due to her postpartum illness.
In an unofficial chronicle it is said that when Injong went to pay his morning respects, Queen Munjeong's face started radiating with a smile only a mother could give to her child.
However in 1565, Queen Munjeong ordered him to move to a nearby location, Geun-do, because he was Princess Hyohye's only son-in-law.
This brought Yun Gae-mi-chi and her father's concubine, Bok-yi, to be interrogated but both soon died during the questioning due to the suspected poisoned meal they had.
Thirteen years later in 1602, Lady Yun's eldest son, Yi Sun (이순; 1576–1654), appealed to the government over his mother's death saying that it was an unfair one.