King Wu
Jili had at least three sons. The eldest son was King Wen whose son King Wu established the Zhou dynasty of China upon defeating the Shang at the Battle of Muye. The second eldest son was enfeoffed by King Wu in Eastern Guo, also known as (i.e. the "Second Son of Guo"), and the third eldest son in Western Guo, also known as (i.e. the "Third Son of Guo.")