Title: Yeonsangun of Joseon
Content: Father: King Seongjong of Joseon (20 August 1457 – 20 January 1494) (조선 성종) ; Grandfather: King Deokjong of Joseon (3 October 1438 – 2 September 1457) (이장 의경세자) ; Grandmother: Queen Sohye of the Cheongju Han clan (7 October 1437 – 11 May 1504) (소혜왕후 한씨) ; Mother: Queen Jeheon of the Haman Yun clan (15 July 1455 – 29 August 1482) (제헌왕후 윤씨) ; Grandfather: Yun Gi-gyeon (윤기견) ; Grandmother: Lady Shin of the Goryeong Shin clan (고령 신씨) ; Consorts: ; 1) Deposed Queen Shin of the Geochang Shin clan (15 December 1476 – 16 May 1537) (폐비 신씨) ; 2) Princess Hwishin (24 October 1491 – 
Title: Joseon
Content:   Yeonsangun is often considered the worst tyrant of the Joseon, whose reign was marked by Korean literati purges between 1498 and 1506. His behavior became erratic after he learned that his biological mother was not Queen Junghyeon but the deposed Queen Lady Yun, who was forced to drink poison after poisoning one of Seongjong's concubines out of jealousy and leaving a scratch mark on Seongjong's face. When he was shown a piece of clothing that was allegedly stained with his mother's blood vomited after drinking poison, he beat to death two of Seongjong's concubines who had accused Consort Yun and he pushed Grand Queen Insu, who died afterward. He executed government officials who supported Consort 
Title: Yeonsangun of Joseon
Content:  Yeonsan-gun or Prince Yeonsan (born 23 November 1476 – 20 November 1506, r. 1494–1506) born Yi Yung was the 10th king of Korea's Joseon Dynasty. He was the eldest son of King Seongjong by his second wife, Queen Jeheon. He is often considered the worst tyrant of the Joseon Dynasty and perhaps all of Korean history, notorious for launching two bloody purges of the seonbi scholar elite for doing mischievious deeds. He also seized a thousand women from the provinces to serve as palace entertainers, and appropriated the Seonggyungwan study hall as a personal pleasure ground so that the scholars would see what they are doing. As a much-despised overthrown monarch, Yeonsan-gun did not receive a temple name.
Title: Yeongjo of Joseon
Content: Father: King Sukjong of Joseon (7 October 1661 – 12 July 1720) (조선 숙종) ; Grandfather: King Hyeonjong of Joseon (14 March 1641 – 17 September 1674) (조선 현종) ; Grandmother: Queen Myeongseong of the Cheongpung Kim clan (13 June 1642 – 21 January 1684) (명성왕후 김씨) ; Mother: Royal Noble Consort Suk of the Haeju Choe clan (17 December 1670 – 9 April 1718) (숙빈 최씨) ; Grandfather: Choe Hyo-won (23 February 1638 – 15 August 1672) (최효원) ; Grandmother: Lady Hong of the Namyang Hong clan (1639 – 1673) (남양 홍씨) ; Consorts and their Respective Issue(s): ; 
Title: Sukjong of Joseon
Content: Father: King Hyeonjong of Joseon (14 March 1641 – 17 September 1674) (조선 현종) ; Grandfather: King Hyojong of Joseon (3 July 1619 – 23 June 1659) (조선 효종) ; Grandmother: Queen Inseon of the Deoksu Jang clan (9 February 1619 – 19 March 1674) (인선왕후 장씨) ; Mother: Queen Myeongseong of the Cheongpung Kim clan (13 June 1642 – 21 January 1684) (명성왕후 김씨) ; Grandfather: Kim U-myeong (1619 – 1675) (김우명) ; Grandmother: Lady Song of the Eunjin Song clan (1621 – 1660) (은진 송씨) ; Consorts and their Respective Issue: ; 1) Queen Ingyeong of the Gwangsan Kim clan (25 October 1661 – 16 December 1680) (인경왕후 김씨) ; 2) First daughter (27 April 1677 – 13 March 1678) ; 3) Second daughter 
Title: Jeongye Daewongun
Content: Father: Yi In, Prince Euneon (29 May 1754 – 30 June 1801) (이인 은언군) ; Grandfather: King Jangjo of Joseon (13 February 1735 – 12 July 1762) (조선 장조) ; Grandmother: Royal Noble Consort Suk of the Buan Im clan (? - 1773) (숙빈 임씨) ; Mother: Princess Consort Jeonsan of the Jeonju Yi clan (19 December 1764 – 4 June 1819) (전산군부인 전주 이씨) ; Consorts and their Respective Issue: ; Grand Internal Princess Consort Wanyang of the Jeonju Choi clan (19 February 1804 - 19 February 1840) (완양부대부인 전주 최씨) ; Yi Wongyeong, Prince Hoepyeong (11 September 1827 – 6 September 1844) (회평군 이명) ; Grand Internal Princess Consort Yongseong of the Yongdam Yeom clan (20 July 1793 - March 1834) (용성부대부인 용담 염씨) ; King Cheoljong (25 July 1831 – 16 January 1864) ; Lady Yi (이씨) ; Yi Gyeongeung, Prince Yeongpyeong (20 July 1828 – 1 February 1902) (영평군 이경응) 
Title: Yejong of Joseon
Content: Father: King Sejo of Joseon (2 November 1417 – 23 September 1468) (조선 세조) ; Grandfather: King Sejong of Joseon (15 May 1397 – 8 April 1450) (세종) ; Grandmother: Queen Soheon of the Cheongsong Shim clan (12 October 1395 – 19 April 1446) (소헌왕후 심씨) ; Mother: Queen Jeonghui of the Papyeong Yun clan (8 December 1418 – 6 May 1483) (정희왕후 윤씨) ; Grandfather: Yun Beon (1384 - 1448) (윤번) ; Grandmother: Lady Yi of the Incheon Yi clan (1383 – 1456) (인천 이씨) ; Consorts and their Respective Issue(s): ; 1) Queen Jangsun of the Cheongju Han clan (22 February 1445 – 5 January 1462) (장순왕후 한씨) ; 2) Yi Bun, Grand Prince Inseong (31 December 1461 – 4 December 1463) (이분 인성대군) ; 3) Queen Ansun of the Cheongju Han clan (12 March 1445 – 
Title: Song Sang-hyeon
Content:  Song Sang-yeon was born to Saheonbu Song Bok-heung (宋復興) and his wife, a descendant of Lee Mun-gun (李文健), writer of the Mukjae Diaries. Known to be a gifted child, Song is said to have mastered the Confucian classics (經史) during his teens. At fifteen years old, he took Seungbosi, the preliminary Sungkyunkwan admission exam, and won first place. It was during this time that Song became friends with eminent future Joseon scholar and politician Gim Jangsaeng. In 1570, he passed the higher Sungkyunkwan admission exam, Jinsasi, and became a Jinsa.
Title: Prince Yeongsan
Content: Father: King Seongjong of Joseon ; Mother: Royal Consort Sugyong of the Cheongsong Sim clan (숙용 심씨) (1465–1515) ; Sister: Princess Gyeongsun (1482–?) (경순옹주) ; Sister: Princess Sukhye (1486–1525) (숙혜옹주) ; Brother: Yi Gwan, Prince Yiseong (1489–1552) (이관 이성군) ; Consorts and issues: ; Princess Consort Geumneung of the Cheongsong Sim clan (금릉군부인 청송 심씨, 金陵郡夫人 靑松沈氏) (?–4 May 1524) ; Daughter: Yi Ui-jeong (이의정, 李懿貞) (1508–?) ; Daughter: Yi Gyeong-jeong (이경정, 李敬貞) (1510–?) ; Princess Consort Gyoseong of the Gyeongju Jeong clan (교성군부인 경주 정씨, 交城郡夫人 慶州鄭氏) (?–8 May) ; Princess Consort Hamheung of the Hwang clan (함흥군부인 황씨) ; Son: Prince Jangheung (장흥군상, 1520–?) ; Daughter: Unknown (1522–?) ; Concubine: Unknown ; Son: Prince Euncheon (은천군 정; 1514–?) ; Concubine: Unknown ; Son: Prince Eumseong (음성도정 유, 1534–1588) ; Concubine: Unknown ; Son: Prince Yangsang (양산군 록, 1517–1573) ; 3 daughters ; Concubine : Unknown ; Son: Yi Mak-ji (이막지, 1518–?) 
Title: Gwanghaegun of Joseon
Content: Father: King Seonjo of Joseon (26 November 1552 – 16 March 1608) (조선 선조) ; Grandfather: Yi Cho, Grand Internal Prince Deokheung (2 April 1530 – 14 June 1559) (이초 덕흥대원군) ; Grandmother: Grand Internal Princess Consort Hadong of the Hadong Jeong clan (23 September 1522 – 24 June 1567) (하동부대부인 정씨) ; Mother: Royal Noble Consort Gong of the Gimhae Kim clan (16 November 1553 – 13 June 1577) (공빈 김씨) ; Grandfather: Kim Hee-Cheol (1519 – 1 August 1592) (김희철, 金希哲) ; Grandmother: Lady Kwon of the Andong Kwon clan (정경부인 안동 권씨, 貞敬夫人 安東 權氏) ; Consorts and their Respective Issue(s): ; 1) Deposed Queen 

Question: Who is the father of Yeonsangun of Joseon?
Answer: Seongjong of Joseon.
Li Hyeol.
Xuanling.
Kangjingrenwenxianwuqinshenggongxiaodaiwang.
Chengzong.