Dangun Wanggeom was the legendary founder of Gojoseon, the first kingdom of Korea, in present-day Liaoning, Manchuria, and the Korean Peninsula. He is said to be the grandson of the god of heaven, and to have founded the kingdom in 2333 B.C.E. Although the term Dangun commonly refers to the founder, some believe it was a title used by all rulers of Gojoseon, and that Wanggeom was the proper name of the founder.