Yun Young-sun
Yun Young- sun( born 4 October 1988) is a South Korean footballer who plays as centre back for Ulsan Hyundai and the South Korea national football team.
Kaya Alp
Kaya Alp was, according to Ottoman tradition, the son of Kızıl Buğa and the father of Suleyman Shah, who was, in turn, the grandfather of Ertuğrul, and the great grandfather of the Ottoman Empire founder, Osman I.
Shin Young-sun
Shin Young- sun( born 30 October 1969) is a South Korean biathlete.
He competed in the 20 km individual event at the 1988 Winter Olympics.
Yun Chi-wang
General Yun Chi-wang( 윤치왕, 尹致旺)( February 17 1895 – December 21 1982) was a South Korean politician, soldier and gynecologist.
He was the half brother of Yun Chi- ho, uncle of Yun Poson( who was the fourth president of South Korea), and cousin of Yun Chi-Young.
His nickname was Nampho( 남포, 南 圃), and his courtesy name was Sungun( 성운, 聖雲).
Yun Yeong-ryeol
Yun Yeong- ryeol( 윤영렬, 1854 – 1939) was a Korean Joseon Dynasty politician and soldier.
nickname was Gyungjae, Yeongu. uncle of Yun Chi- ho and grandfather of Yun Bo- seon, father of Yun Chi-young.
Yun Young-sun (minister)
Yun Yeongseon (윤영선;尹永善, 1896–1987) was a South Korean politician, businessman, and social activist.
He was the son of Yun Chi-ho.
His nickname was Odang.
His American name was Allen Yun, while he also adopted the Japanese name Ito Yonsen (伊東永善)
when Korea was under Japanese rule.
Jeon Young-sun
Jeon Young- Sun( born 8 April 1974) is a South Korean former field hockey player who competed in the 1996 Summer Olympics.
Yun Young-sook
Yun Young- sook( born September 10, 1971) is a female South Korean archer and Olympic champion.
She competed at the 1988 Summer Olympics in Seoul, where she won a gold medal with the South Korean archery team, and also an individual bronze medal.
Yun Young-su
Yun Young- su is a South Korean writer.
Yun Chi-ho
Yun Chi-ho
(Korean: 윤치호
, hanja: 尹致昊, 1864 – 1945) was an important political activist and thinker during the late 1800s and early 1900s in Joseon Korea.
His penname was Jwa-ong (좌옹, 佐翁); his courtesy name was Sungheum (성흠;聖欽), or Sungheum (성흠;成欽).
Yun was a prominent member of reformist organizations such as the Independence Club (독립협회;獨立協會), led by Seo Jae-pil, the People's Joint Association (만민공동회;萬民共同會), and the Shinminhwae (신민회;新民會).
He was a strong nationalist especially in his early years; pushing for reform and modernization of the Joseon government.
He also served in various government positions and was a strong supporter of Christianity in Korea.
Although Yun's early years were filled with strong support of patriotic and nationalist movements, there seemed to have been a change in Yun's approach to Korean independence in the wake of the Japanese dominance in Korea, starting with Korea becoming a protectorate of Japan in 1905, and then fully annexed into the Japanese Empire in 1910.
Because of Yun's apparent change in attitude toward Korean independence and his lack of support of nationalist movements, like the 1919 Samil Movement, many Koreans today see him as a collaborator with the Japanese.
Yun Chi-ho was a member of one of the prominent "yangban" families of Korea.
Son of General Yun Ung-nyeol, who served as a minister in the Joseon government.
he attended Vanderbilt University in Tennessee before transferring to Emory University in Georgia.
He was also an early leader of the Korean YMCA and a South Korean Methodist.

Question: Who is the paternal grandfather of Yun Young-Sun (Minister)?