Kō no Koreyori
Kō no Koreyori was an eleventh-century warrior from whom the Kō clan of Shimotsuke traced its line. Later genealogies, including the Sonpi Bunmyaku, name him as the fourth son of Minamoto no Yoshiie (1039–1106), given in infancy to Takashina no Koreaki to raise and styled Ōdaka no Tayū.
Around Koreyori's time the Takashina house shortened its name to Kō, became warriors, and entered Yoshiie's service in the east, the beginning of the clan's martial identity.