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His name
According to Japanese Wikipedia, he was a pupil of the first Echigo no Kami Kanesada. When the master died, around 1669 (Kanbun 9), his son Iwamatsu was still a child, and the pupil took the name Kanesada. Around 1680 (Enpō 8) he handed it on to Iwamatsu and went on to sign 坂倉言之進照包 (Sakakura Gonnoshin Terukane). Sesko reproduces a katana signed Sakakura Gonnoshin Terukane and dated 1680, the year of the change of name.
Itakura or Sakakura
The 日本人名辞典 (Nihon jinmei jiten) of 芳賀矢一 (Haga Yaichi) takes Terukane to be the later name of the second Echigo no Kami Kanesada, of Osaka, but gives him the surname 板倉 (Itakura) and the spelling 輝包 (Terukane) alongside 照包 (Terukane). Japanese Wikipedia and Sesko write 坂倉 (Sakakura).
The generations
- The first Echigo no Kami Kanesada died around 1669, according to Japanese Wikipedia. His origin and the year of his title are not recorded in any of the sources consulted.
- The second, the subject of this monograph, signed Kanesada from around 1669 to around 1680, and then Terukane.
- The third is Iwamatsu. According to Japanese Wikipedia, his work is very scarce and easy to tell apart, because the shape of the characters of the signature is clearly different. Haga Yaichi’s dictionary records him with the surname 山田 (Yamada), in an entry written 兼貞 (Kanesada).