Yun Doo-su

This is a Korean name; the family name is Yun.

Letter of Yun Doo-su

Yun Doo-su(윤두수, 尹斗壽, 1533 – 1601) was Korean Joseon Dynastys politicians and Writer, Neo-Confucian scholars. a penname was Oheum(오음, 梧陰), courtesy name was Jaang(자앙, 子仰).