Queen Jeonghyeon came to wield considerable power and also influence a number of political decisions which secured her son's position on the throne, however, her excessive reliance on her kin and paternal clan paved way for the occurrence of the second and third literati purges.
The Queen had a fairly good upbringing because of her background having been born to the privileged Yangban society and she received education in both Hangul and Hangja where she excelled with remarkable calligraphy skills, she was naturally a reserved woman who was known to be intelligent and smart, more courteous than many women of her era, she was beautiful and warm hearted to many.
Lady Yun was instated on 8 August 1476 at the age of 21 and several months later, she succeeded in giving birth to Yi Yung who later to become King Yeonsan.
The new Queen however proved to be temperamental and highly jealous of Seongjong's remaining concubines and Yun Chang-nyeon was not a exception, she'd even stooped to poisoning one of them in 1477.
One night in 1479 during a heated argument with her husband and two of his Consorts, which was rumored to have supposedly been orchestrated by Yun Chang-nyeon, and the concubines who had now become afraid of the young Queen, she clawed the King, leaving visible scratch marks on his face.
The Deposed Queen Yun, having resided outside the Palace for three years, eventually met the fate that she'd helped mete out of so many people when a Royal Edict was issued sentencing her to commit suicide by swallowing poison.
She also adopted the young boy officially a year later and showered him with love as though he were her own, ordering all ladies of the palace and Eunuchs to keep their mouths shut about his maternity with the resuscitation of Queen Yun.
Because Queen Dowager Insu held enormous influence over the court due to her father and clan alliances, this brought indifferences between her and her grandson's rule as king.
These inconsolable differences soon led to a brutal clash; leaving the Queen Dowager to die in 1504 after King Yeonsan pushed her in an altercation when he found out his grandmother was behind the cause of his birth mother's death.
So during a revolt, the leading forces of the anti-government advocated the establishment of Grand Prince Jinseong (later King Jungjong) on the throne and consented.
The Queen Dowager lived a quiet life after the succession of her son, and eventually died on 13 December 1530 at the age of 68 within Gyeongbokgung's Dong Palace.
Her son made a statement highlighting her virtues, "The Queen Mother was benevolent and harmonious with her family and did not seek a government post for her maternal relatives" (대비는 인자하여 족속들과 화목하였으며 외척을 위해 벼슬을 구하지 않았다).
For her posthumous title, "Jeong" (정; 貞) was for the achievement of great thoughts, and "Hyeon" (현; 顯) was for the appearance of conduct outside the court; becoming Queen Jeonghyeon (정현왕후; 貞顯王后).