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Saitō Hajime

Japanese swordsman (1844–1915)

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General referenceInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionMay 20, 2026
Entity authorityQ138256 ↗
Source-derived summary

Hajime Saitō (斎藤 一) (born Hajime Yamaguchi (山口 一); February 18, 1844 – September 28, 1915) was a Japanese samurai of the late Edo period, who most famously served as the captain of the third unit of the Shinsengumi. He was one of the few core members who survived the numerous wars of the Bakumatsu period. He was later known as Fujita Gorō (藤田 五郎) and worked as a police officer in Tokyo during the Meiji Restoration where he worked mostly undercover for them and for the Japanese government.

Early years

He was born in Edo, Musashi Province (now Tokyo). Very little is known about his early life. He was born Yamaguchi Hajime (山口 一) to Yamaguchi Yūsuke (山口 祐助), an ashigaru of the Akashi Domain, who had bought the rank of gokenin (a low-ranking retainer directly serving the Tokugawa shōgun), and his wife Masu (ます). He had an older brother named Hiroaki and an older sister named Katsu. According to the published records of his family, Saitō left Edo in 1862, after accidentally killing a hatamoto. He went to Kyoto and taught in the dōjō of a man named Yoshida, who had relied on Saitō's father Yūsuke in the past. His style of swordsmanship is not clear.

Editorial summary

The public source identifies “Saitō Hajime” as japanese swordsman (1844–1915). This brief keeps that definition visible, then builds a research path around Saitō, Hajime and Japanese.

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—1844, 1915, 1862—that can be checked directly. The linked authority record independently contributes the date 1844-02-18. Its value is orientation rather than verdict, with Saitō, Hajime and Japanese providing the first useful test.
Editorial analysis

Why this record matters

A short description can identify a subject without explaining its stakes. For “Saitō Hajime”, the useful work is to connect “japanese swordsman (1844–1915)” to the records capable of establishing context and consequence.

Evidence profile

The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated May 20, 2026. The linked authority identifier is Q138256. VIAF identifies the subject as 251512943. 1 of 2 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1844, 1915 and 1862.

Critical limits

Overview language is designed for orientation and should not be treated as a substitute for the evidence cited beneath it. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

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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.

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Source & attribution

This entry incorporates text from “Saitō Hajime” 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.