Dangun Wanggeom or Tangun was the legendary founder of Gojoseon, the first ever Korean kingdom, around present-day Liaoning, Manchuria, and the northern part of the Korean Peninsula. He is said to be the "grandson of heaven" and "son of a bear", and to have founded the kingdom in 2333 BC. The earliest recorded version of the Dangun legend appears in the 13th-century Samguk Yusa, which cites China's Book of Wei and Korea's lost historical record Gogi (고기, 古記).