Kō no Koremasa

Kō no Koremasa was a son of Kō no Koreyori and a retainer of Minamoto no Yoshiie (1039–1106). He followed Yoshiie's third son Minamoto no Yoshikuni east to Ashikaga Manor in Shimotsuke and settled there, planting the Kō clan in the Ashikaga lands.

From his generation the Kō served the Minamoto-line Ashikaga as senior vassals, fighting the rival Fujiwara-line Ashikaga. His descendants included the Ashikaga stewards Kō no Shigeuji and Kō no Moronao.