Korezazu(石堂是一) was the nephew of Chounsai Tsunatoshi(長運斎綱俊), initially learning the art of swordsmithing from Tsunatoshi. Later, he...

Sunshu Ju Kanesada(駿州住兼貞) originally from Seki(関) in Mino(美濃) Province (present-day Gifu-岐阜県関市- Prefecture), moved to Suruga(駿河), the...