Asayama Koretsuna

Asayama Koretsuna was an official of Asayama district in Izumo Province and the elder brother of Mototsuna. His daughter married Nogi Mitsutsuna, a son of Sasaki Takatsuna who became steward of Nogi in the early Kamakura period.

Their son Takasada inherited Kizu Mishima from his mother. After the Jōkyū War of 1221, most of Koretsuna's family lost their standing, while his brother Mototsuna became head of the Katsube no Sukune lineage.