Kim Young-sook (Hangul: 김영숙; Hanja: 金英淑, born 1947) was the third wife of Kim Jong-il. She was the daughter of a high-ranking military official, and was a switchboard operator in North Hamgyong Province before moving to Pyongyang. Kim Jong-il's father, Kim Il-Sung, handpicked her to marry his son. The two had been estranged for some years before his death. Kim Young-sook had a daughter from this marriage, Kim Sul-song (born 1974). She was First Lady of North Korea from 1994 to late 2011.
Song Hye-rang, The sister of Kim Jong-il's second wife Song Hye-rim, mentioned that she is "insignificant to Kim Jong-il, apart from being a legitimate wife in front of Kim Il-sung. She didn't even have an identity card in North Korea" as noted in her memoir Rattan house. 
^To keep the tree of manageable size, it omits some members, e. g., brothers and sisters of Kim Jong-il.
^Names of Supreme Leaders of the DPRK (and the name of the article being viewed, if any) are in bold font.
^Korean names often have a variety of transliterations into English, which can be confusing. For example, "Kim Jong-chul" may also be written "Gim Jeong-cheol" or "Kim Jŏng-ch'ŏl" among many other variations. See Korean romanization for more information.
^ abcdOfficial biographies of Kim Jong-suk and Kim Jong-il give birth years of 1917 and 1942, respectively, while Kim Jong-un's birth year may actually be 1984. Kim Ju-ae may have been born in late 2012 or early 2013.