Wang To-in, known by her title of Princess Jeonghwa, was the illegitimate daughter of Gangjong of Goryeo and the second wife of Ch'oe Ch'ung-hŏn.
[2] According to Goryeosa, her existence can be confirmed by the record: "Ch'oe Ch'ung-hŏn accepted King Gangjong's illegitimate daughter as his second wife".
[4] Despite being the King's daughter, she was not recognized or treated accordingly due to her mother's status.
She was forced to marry her family's enemy Ch'oe, who was 3 years older than her father Gangjong.
After marriage, she lived with the pain of her paternal families, a husband who wielded uncontrollable power and an attempt to kill her.