Title: Choe Chung
Content: Father: Choe On (최온, 崔溫) ; 1st son: Choe Yu-seon (최유선, 崔惟善) ; 2nd son: Choe Yu-gil (최유길, 崔惟吉) ; Daughter: Lady Choe (부인 최씨, 夫人 崔氏) ; Son-in-law: Gim Seong-su (김성수, 金成洙) 
Title: Paul Chong Hasang
Content: Father: Jeong Jae-won (정재원, 丁載遠; 1730–1792) ; Grandfather: Jeong Ji-hae (정지해, 丁志諧; 1712–1756) ; Grandmother: Lady, of the Pungsan Hong clan (부인 풍산 홍씨; 1712–1753) – daughter of Hong Gil-bo (홍길보, 洪吉輔). ; Uncle: Jeong Jae-un (정재운, 丁載運); became the adopted son of his uncle, Jeong Ji-yeol (정지열, 丁志說). ; Uncle: Jeong Jae-jin (정재진, 丁載進) ; Mother: ; Biological: Lady Yun So-on of the Haenam Yun clan (윤소온, 尹小溫, 부인 해남 윤씨; 1728–1770); daughter of Yun Deok-ryeol (윤덕렬, 尹德烈). ; Older brother: Jeong Yak-jeon (정약전, 丁若銓; 1758–1816) ; Older sister-in-law: Lady, of the Pungsan Kim clan (부인 풍산 김씨); daughter of Kim Seo-gu (김서구, 金敍九) 
Title: Gong Seung-yeon
Content:  Gong is the older sister of Twice's Yoo Jeong-yeon. Their father, Yoo Chang-joon, was a private chef for former president Kim Dae-jung, as well as a head chef of the Seoul Plaza Hotel for over 20 years, specializing in Korean cuisine.
Title: Oh Chong-song
Content:  According to Sankei Shimbun, Japanese officials have confirmed that Oh is the son of a North Korean major general.
Title: Choe U
Content: Father: Choi Chung-heon (1149 - 29 October 1219) (최충헌) ; Grandfather: Choi Won-ho (최원호) ; Grandmother: Lady Yu (부인 유씨) ; Mother: Lady Song (부인 송씨) ; Grandfather: Song Cheong (송청) ; Wives and their issue(s): ; Lady, of the Hadong Jeong clan (? - 1231) (부인 하동 정씨); daughter of Jeong Suk-cheom (정숙첨). ; Lady Choe Song-yi (최송이); married Gim Yak-seon (김약선). ; Grandson: Gim Mi (김미) ; Grandson: Gim Wi-hang (김위항) ; Grandson: Gim Pil-yeong (김필영) ; Great-granddaughter: Queen Jeongsun (정순왕후, 1222 - 29 July 1237) ; Lady Choe (부인 최씨) ; Lady, of the Hyeopgye Dae clan (? - 1251) (부인 협계 대씨); daughter of Dae Jip-seong (대집성, d. 1236). ; Oh Seung-jeok (오승적) – stepson, died after killed by Choe Hang. ; Lady, of the Cheorwon Choe clan (부인 철원 최씨) ; Lady Seo Ryeon-bang (서련방) – a prostitute. ; Choe Man-jong (최만종) ; Choe Hang (1209 – 17 May 1257) (최항) ; Lady An Sim (안심) 
Title: Seongcheol
Content: "There is a way. No one will reveal the secret.  You must enter the door yourself.  But there is no door.  In the end, there is not even a way." Born on April 10, 1912, in Korea under the name of Yi Yeongju(이영주), Seongcheol was the first of seven children of a Confucian scholar in Gyeongsang province. He was rumored to have been an exceptionally bright child who read constantly, having learned to read at the age of three, and being proficient enough to read such Chinese classics as Romance of the Three Kingdoms and Journey to the West by age ten. His 
Title: Chunseong
Content:  Chunseong was born on March 30, 1891, in Inje county, Gangwon Province. His father was Lee In-oh (이인오, 李仁五) and his mother was Lady Park of Milyang (밀양박씨). He was their fifth son. Chunseong's family line was of the Pyeongchang Lee clan (평창이씨, 平昌李氏). His father was a tenant farmer. Although Chunseong's birth name was Lee Chang-nim (이창림, 李昌林), his Dharma name was Chunseong (춘성, 春城). He was often called Chunseong Chunseong (春城 春性).
Title: Choe Chung-heon
Content: Father: Choe Won-ho (최원호) ; Mother: Lady Yu (부인 유씨) ; Brother: Choe Chung-su (1151 - 1197) (최충수) ; Sister: Lady Choe (부인 최씨) ; Nephew: Park Jin-jae (1165 - 1207) (박진재) ; Wives and their issue(s): ; Lady Song (부인 송씨); daughter of Song Cheong (송청). ; Choe U (1166 - 10 December 1249) (최우) ; Choe Hyang (1167 - 1230) (최향) ; Lady Choe (부인 최씨) ; Princess Jeonghwa (정화택주); daughter of King Gangjong of Goryeo. ; Choe Gu (최구) ; Mr. Choe (최씨) ; Princess Suseong of the Jangheung Im clan (수성택주 임씨); daughter of Im-Bu (임부). ; Choe Seong (최성) ; Ja Un-seon (자운선) 
Title: Chongjin
Content: An Song-il, North Korean Soccer player ; Jang Song-thaek, North Korean politician and uncle of Kim Jong-un, current leader of North Korea ; Kim Swoo-geun, South Korean architect ; Kim Yik-yung, South Korean ceramic artist ; Pak Chang-sik, North Korean politician ; Ri Sol-ju, the First Lady of North Korea and the wife of North Korean Supreme Leader Kim Jong-un. ; Ri Ul-sol, North Korean Marshal and politician ; Shin Sang-ok, South Korean film producer and director ; Kang Nara (born 1997), North Korean defector living in Seoul, South Korea 
Title: Choi Min-soo
Content:  Choi's family has been active in acting, and singing. Choi is the son of Choi Moo-ryong, a popular actor of the 1960s and 1970s, and Kang Hyo-shil, an actress. His maternal grandmother is Jeon Ok, referred to as 'Queen of Tears' for her excellence at acting for tragic dramas. His grandfather is Kang Hong-shik, an actor, a film director and singer active during the Japanese occupation period. Kang Hong-sik and Jeon Ok were the first married couple in Korean entertainment history. Kang went over to North Korea along with his daughter Kang Hyo-son who later became a famous actress of North Korea. Kang Hong-shik was honored as "Merited artist" as well. Choi graduated from 

Question: Who is the father of Seol Chong?
Answer: Wonhyo.
Won-ho.