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Quick profile
- Name
- Masahiro (正広, also written 正廣), first generation of the Hizen Masahiro HD
- Kanji and reading
- 河内大掾正広 (Kawachi Daijō Masahiro) HD
- Period
- Shintō, early Edo period; from 1607 to 1665 according to the record of the Metropolitan Museum HD
- Province
- Hizen (肥前, Hizen), in Saga: he signs 肥前国佐賀住 (Hizen no kuni Saga jū) HD
- School
- The Hizen swordsmiths, the school of the Tadayoshi of Saga AT
- Master
- The first Tadayoshi, according to Japanese Wikipedia, which calls him his grandson and pupil; according to the NBTHK, he was the son of Yoshinobu, adopted son of the first Tadayoshi AT
- Title
- 河内大掾 (Kawachi Daijō), in 1628 (Kan'ei 5) according to the Tokyo National Museum HD
- Generations
- He is the first; the second signed with the title Kawachi no Kami (河内守) HD
- Cutting rank
- 業物 (wazamono), the fourth of four grades, in the 懐宝剣尺 (Kaihō Kenjaku) of 1797 AT
- Documented fact and tradition
- His dates, his title and his style are given by the Tokyo National Museum, the Metropolitan Museum and the NBTHK. His kinship with the first Tadayoshi is told by Japanese Wikipedia and by the NBTHK, each in its own way. AT
In short
What we know. That he signed in Saga, that he took the title of Kawachi Daijō and that there are blades of his in the Tokyo National Museum and in the Metropolitan Museum of Art in New York, one of them dated 1653. And that the Yamada cutting list places him among the wazamono.
How we know it. From the records of the two museums and from five issues of the NBTHK Sword Journal that study his blades. The kinship and the cutting rank are given by Japanese Wikipedia.
What we do not know. None of the sources consulted tells his life in detail, and the date of the title does not fit with a katana of 1639 signed without it. No blade of his with a national designation has been found.
Sections
- Saga · the family of the Tadayoshi Life and times His place in the family of the Tadayoshi, his dates, his title and the generation that followed him.
- Midare of coarse nie · kinsuji and sunagashi Work and style The kantei keys given by the NBTHK and how to tell him from the second generation and from the other Hizen swordsmiths.
- Wazamono · blades in museums Famous works His rank in the cutting list, the blades in the Tokyo and New York museums and those the NBTHK has studied.
- Bibliography and credits Sources The sources consulted on 4 October 2026, with their link where possible.