But Young is a Korean name. In Korea, they speak Korean, not English, so whatever Young means in English is irrelevant. It goes without saying that people in Anglophone countries don't get called Young, but it's fine for someone who lives in Korea. Behind the Name is not a site for you to "find the perfect name for your American baby". It lists common names from many cultures and languages, regardless if they would be usable outside that culture or not.
A famous bearer is the popular and beautiful South Korean actress Lee Young-Ae (born 1971). She starred as Guem-Ja in the film Sympathy for Lady Vengeance.