Kim Jong-il had four partners,[13] and at least five children with three of them.[14] He fathered Kim Jong-nam in 1971 with film star Song Hye-rim, and Kim Sul-song in 1974 with his first wife, Kim Young-suk. His second mistress, Ko Yong-hui, was the "de facto First Lady of North Korea". She was born in Japan to a Korean father and Japanese mother.