Why do Koreans have two last names?

Why do Koreans have two last names? Each Korean name usually consists of three syllables. The first is the family name while the second and third are the given name. For example, in the name KIM Min Su (김민수), KIM is the family name. The family name (or ‘surname’) is inherited patrilineally from one’s father and shared with other siblings.

Each Korean name usually consists of three syllables. The first is the family name while the second and third are the given name. For example, in the name KIM Min Su (김민수), KIM is the family name. The family name (or ‘surname’) is inherited patrilineally from one’s father and shared with other siblings.