Gyeru

Gyeru (계루, 桂婁) was an ancient Korean city-state that formed within the former realm of Gojoseon. Ruled by the Gyeru clan (계루부, 桂婁部), it later became a member of the confederation of Jolbon together with Sono, Jeolno, Sun-no, and Gwan-no, and was given to King Dongmyeong. A number of the members of the Go clan in the Gyeru lineage became kings of Goguyreo, including King Yuri and King Taejo, the second and sixth kings, respectively.