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I’m hoping the Japanese sword and history community can help me with something that has turned into a much bigger research project than I ever expected.
I purchased a Japanese sword at the Brimfield Antique Show in Massachusetts. After extensive research and professional examination, the blade has now been identified as a late Koto-period sword. The blade has also been authenticated as belonging to the Miura family.
The accompanying shirasaya is inscribed with the owner’s name:
Miura Sōichi (三浦操一)
It also includes his address in Kesennuma, Miyagi Prefecture, Japan.
Our original assumption was that the blade was Early Shintō, but the authentication determined it is considerably older.
Because of the Miura family association, this sword is now being researched as a possible candidate connected with the family of William Adams (Miura Anjin), although that specific connection has not been proven.
My goal is not to sell the sword.
I would like to contact descendants of the Miura family to let them know this blade has survived and to learn as much as possible about its history and provenance. If this was a family sword that disappeared decades ago, I’d like the family to know it still exists.
I’m looking for help with:
Identifying descendants of Miura Sōichi
Contacting members of the historical Miura family
Recommendations for Japanese historians or genealogists
Museums or organizations that may be able to assist
Anyone familiar with Miura family genealogy in Miyagi Prefecture
I have detailed photographs of the blade, tang, shirasaya inscription, and supporting documentation that I’m happy to share with serious researchers.
Any guidance would be greatly appreciated. Thank you.