Kim Jong Il (born Yuri Irsenovich Kim; 16 February 1941 – 17 December 2011) was a North Korean politician who was the second supreme leader of North Korea from the death of his father Kim Il Sung in 1994 until his death in 2011, when he was succeeded by his son, Kim Jong Un. Afterwards, Kim Jong Il was declared Eternal General Secretary of the Workers' Party of Korea (WPK). In the early 1980s, Kim had become the heir apparent for the leadership of North Korea, thus being established the Kim family, and he assumed important posts in party and army organizations.
https://en.wikipedia.org/wiki/Kim_Jong_Il