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Sasaki Kojirō

Japanese swordsman

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General referenceInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionSep 17, 2026
Entity authorityQ549737 ↗
Source-derived summary

Sasaki Kojirō (佐々木 小次郎; also known as Ganryū Kojirō; c. 1585 – April 13, 1612) was a Japanese swordsman who may have lived during the Azuchi–Momoyama and early Edo periods and is known primarily for the story of his duel with Miyamoto Musashi in 1612, where Sasaki was killed. Although he suffered defeat as well as death at the hands of Musashi, he is a revered and respected warrior in Japanese history and culture. Later, Miyamoto proclaimed that Sasaki Kojirō was the strongest opponent he faced in his life.

In popular culture

Like most of the well-known samurai of his era, Sasaki was depicted in several places:

He plays a central role in the novel, Musashi, by Eiji Yoshikawa. His life is described in a parallel storyline.

In various film adaptations of his story or that of Miyamoto Musashi. For example, in Zoku Miyamoto Musashi: Ichijōji no kettō (Samurai 2: Duel at Ichijoji Temple; 1955; Director / Screenplay: Hiroshi Inagaki).

In the manga Vagabond, he plays a central role alongside Musashi and is shown here as deaf.

Tachibana Ukyo from the computer game Samurai Shodown is modelled after Sasaki, just like the character Haōmaru is modelled after Miyamoto Musashi. His signature technique is also called Tsubame Gaeshi.

Editorial summary

Begin with the source’s own compact description: “Sasaki Kojirō” is japanese swordsman. The dossier treats that line as a proposition to test through Sasaki, Kojirō and Japanese, not as a finished interpretation.

Editorial reviewA practical starting point whose main value is the path it opens into stronger specialist and primary sources. The current lead gives the account dated anchors—1585, 1612, 1955—that can be checked directly. The linked authority record independently contributes the date 1584. For this dossier, Sasaki, Kojirō and Japanese is the immediate research focus.
Editorial analysis

Why this record matters

The phrase “japanese swordsman” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.

Evidence profile

Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Sep 17, 2026. The linked authority identifier is Q549737. VIAF identifies the subject as 23400404. The Library of Congress control number is n78050345. 3 of 3 selected statements include explicit references; 1 carry qualifiers and 0 use preferred rank. The first chronological checks are 1585, 1612 and 1955.

Critical limits

The absence of detail may reflect summary conventions rather than a lack of surviving documentation. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

How to read it

Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.

Best used for
  • Subject orientation
  • Search vocabulary
  • Locating named sources
Verify next

The closest primary source, responsible institution and strongest cited specialist reference.

Three-step research path

  1. Establish the record: confirm the title “Sasaki Kojirō”, its source revision and the description used here.
  2. Expand the search: follow Sasaki Kojirō primary sources, Sasaki Kojirō archive and Sasaki research across catalogues and specialist indexes.
  3. Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.

Questions for further research

  1. Which source most directly establishes the central claim about “Sasaki Kojirō”?
  2. Which institution is responsible for the underlying evidence?
  3. Which cited source is closest to the event, object or claim?
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Source & attribution

This entry incorporates text from “Sasaki Kojirō” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.