Yun (Korean name)

Yoon
Hangul	윤
Hanja
Revised Romanization	Yun
McCune–Reischauer	Yun

Yoon (윤) is the eighth most common family name in Korea. The name is sometimes also transliterated as Yun, Yune, or Youn. The Hanja character 尹 is defined as "eldest" in Korean which is different from the Chinese definition. The use of Hanja for personal names has become less common in Korea.

The Chinese character 尹 is also used by the following families: Yǐn (surname) in China and Doãn in Vietnam. The Korean surname Yun or Youn has no relations with the Doãn surname of Vietnam or Yin of China.

The Papyeong (파평/坡平) Yoon 윤(尹）clan , which has its seat in Papyeong-myeon, Paju City, is the most well-known and largest Yun clan. The clan's founding ancestor is General Yun Sin-dal, who assisted Wanggeon in founding the Goryeo Dynasty.

Yoon Gwan was a renowned general in the Goryeo Dynasty. He helped form the Byeolmuban forces to fight and defeat the Jurchen tribes in 1107.

Several Papyeong Yoon women became queens during the early Joseon Dynasty, they include Queen Munjeong and Queen Janggyeong.

Last ruling Empress, Empress Sunjeong of the Korean Empire, was from another Yoon clan, Haepyeong Yoon. The Haepyeong Yoon clan was never apart of the Papyeong clan. There are six very distinct and original Yoon family clans. Each which are different and unique in origins of their own right. The first Haepyeong Yoon was a person named Yun Chungjeong who came from China during the Goryeo Danasty. There are very few surviving Haepyeong Yoon's family members existing today.

"Empress Sunjeong was born Lady Yun of Haepyeong in Seoul and her father was Marquis Yun Taek-yeong, the Lord of Haepung."

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Wikipedia