Yo-jong was born on 26 September 1987 to father Kim Jong-il who is the late leader of North Korea. Yo-jong's brother is North Korea's leader Kim Jong-un. She is the youngest daughter of mother Ko Yong-hui and father Kim Jong-il. She got married to guy name Choe song who is the second son of a top government official of North Korea. Reportedly pregnant but the source of the report is unclear and in terms, North Korea's situation a very little info is available on her marriage and children.