Geumgwan Gaya
Kim Yu-shin (595 – 18 August 673) was a general in 7th-century Silla. He led the unification of the Korean Peninsula by Silla under the reign of King Muyeol and King Munmu. He is said to have been the great-grandchild of King Guhae of Geumgwan Gaya, the last ruler of the Geumgwan Gaya state. This would have given him a very high position in the Silla bone rank system, which governed the political and military status that a person could attain.