Dewa Kami, Kokyo Minamoto, Mitsu Hira
JO-JO SAKU, NBTHK TOKENBETSU HOZON PAPERS
Smiths from the Ishido School came from Omi Province. The Ishido Smiths originated here. However, this group of smiths scattered to other parts of Japan such as to Edo, Kii, Osaka and Fukuoka in Kyushu.
The Ishido Smiths made swords exlusively in The Bizen tradition following the works of the Ichimonji schools. In various types of Choji and Choji/Midare and Fukuro Choji.
The group called The Edo - Ichido School produced the most capable Smiths of all the Ishido group. the most capable in the Edo - Ishido group was Korekazu Tsunemitsu, Mitsu Hira and Munehiro younger brother of Mitsu Hira.
It was Mitsuhira's younger brother of Tsunamitsu who was closest to the Bizen Fukuka Ichimonji Smiths in the middle Kamakura period. His swords were also rated Ryo Wasamono ( supreme sharpness).