NBTHK Tokubetsu Kicho Token (specifying later generation) no.366893, 3rd March 1979
The first of several generations living at Uwajima in Iyo (Ehime prefecture) and who signed Kunifusa through to the late Edo period, was retained by Date Hidemune in 1615. He was a pupil of Higo Takeda Hizen (no) kami Shigemasa, who was known as Iga Ishido. The family often signed with the juryo-mei Chikugo daijo, or Chikugo no kami. The second generation studied at some time under Yamato (no) kami Yoshimichi, the third under Omi (no) kami Tadatsuna, and the seventh generation is known to have sometimes included in the words Suishinshi taku ni oite kore wo tsukuru [this was made at the house of Suishinshi], intimating that he was one of the many students of Suishinshi Masahide in the 19th century.
This fine blade is by one of the later generations of the family.