Hanpu

Hanpu (函普), later Wanyan Hanpu, was a Jurchen leader of the early tenth century. According to the ancestral story of the Wanyan clan, Hanpu came from Goryeo when he was sixty-years old, reformed Jurchen customary law, and then married a sixty-year-old local woman who bore him three children. His descendants eventually united Jurchen tribes into a federation and established the Jin Dynasty in 1115. In 1136 or 1137, Hanpu was retrospectively given the temple name Jin Shizu (金始祖), or "first ancestor of Jin." Historians usually call the story of Hanpu's founding of the Wanyan clan a "legend," but agree that it indicates the existence of contacts between some Jurchen clans and the states of Goryeo and Balhae in the tenth century.

Read more about Hanpu:  Ancestor of The Wanyan Clan, Legacy