Description
Yokoyama Sakujirō was one of the earliest disciples of Kanō Jigorō and one of
the Kodokan Shitennō (Four Guardians of the Kodokan). He was known as
"Demon Yokoyama" for his violent fighting style and harsh training
methods.
Teachers (2)
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Kanō Jigorō
sports_martial_artsKōdōkan Jūdō
Confirmed
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3 sources
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Wikipedia and Kanō's own memoirs state it.
“Yokoyama Sakujirō [...] was one of the earliest disciples of Kanō Jigorō.”
— Yokoyama Sakujiro - Wikipedia (English). Wikipedia
(English)link
history
info
“1886年（明治19年）、23歳、4月に嘉納治五郎の講道館に入門。”
visibilityFirst-hand
“Those who were specializing in judo included Shiro Saigo, Yoshitsugu Yamashita,
Sakujiro Yokoyama”
— Brian N. Watson. (2008). Judo Memoirs of Jigoro
Kanoinfo
-
person
Inoue Keitaro
sports_martial_artsTenjin Shin'yō-ryū
Probable
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2 sources
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Historical records indicate Yokoyama trained in Tenjin Shin'yō-ryū jujutsu
before joining Kodokan; specific teacher and dojo mentioned in reliable sources.
“He trained in Tenjin Shin'yō-ryū jujutsu under Keitaro Inoue in the Yushima
Tenjin dojo”
— Yokoyama Sakujiro - Wikipedia (English). Wikipedia
(English)link
history
info
“井上敬太郎（道場は湯島天神下）に天神真楊流を学んだ。”
Ranks (1)
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military_tech8 dan
Probable
Dan-Kyu System
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1 source
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Posthumously awarded 8th dan rank; well-documented in Japanese Wikipedia and
historical records as one of the highest ranks awarded to early Kodokan
practitioners.
Students (7)
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Takahashi Kazuyoshi
sports_martial_artsKōdōkan Jūdō
Probable
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1 source
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Well-documented student of Yokoyama Sakujiro at the Kodokan, mentioned in
Japanese Wikipedia biography as his direct disciple
“講道館四天王の1人である横山作次郎の直弟子であり、切れ味鋭い足技を駆使した返し技（裏技）の達人であった。”
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person
Satake Soshihiro
sports_martial_artsKōdōkan Jūdō
Probable
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2 sources
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Student of Yokoyama Sakujiro at the Kodokan from 1892, per Japanese Wikipedia; a
BJJ blog has him training under Yokoyama with Maeda; not independent
“At some point later, probably in the late 1890’s, he joined the Kodokan and
would become peers of Mitsuyo Maeda. The two judoka trained together under
Sakujiro Yokoyama, who was known as one of the Four Guardians of the Kodokan”
— The Sumo wrestler who taught BJJ, Soshiro Satake
link
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Omori Kojiro
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1 source
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Japanese Wikipedia mentions involvement with Yokoyama Sakujiro at Higher Normal
School, but relationship not clearly defined as teacher-student
“高師で柔道教授をつとめた横山作次郎とも関わった。”
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Mifune Kyūzō
sports_martial_artsKōdōkan Jūdō
Confirmed
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2 sources
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Independent sources state it.
“講道館では横山作次郎に師事。”
— Japanese Wikipedia article on Mifune Kyūzō
link
history
“Impressed by Mifune’s ardor, Yokoyama accepted Mifune as his student at the
Kodokan. Mifune trained relentlessly under Demon Yokoyama.”
— Stevens, John. (2013). The Way of Judo: A Portrait
of Jigoro Kano and His Studentsinfo
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person
Maeda Mitsuyo
sports_martial_artsKōdōkan Jūdō
Probable
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2 sources
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JA Wikipedia on Yokoyama names Maeda as his student; a BJJ blog that likely
draws on it agrees; not independent
“また、三船久蔵や前田光世の師匠としても知られる”
“At some point later, probably in the late 1890’s, he joined the Kodokan and
would become peers of Mitsuyo Maeda. The two judoka trained together under
Sakujiro Yokoyama, who was known as one of the Four Guardians of the Kodokan”
— The Sumo wrestle who taught BJJ, Soshiro Satake
link
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person
Isogai Hajime
sports_martial_artsKōdōkan Jūdō
Probable
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1 source
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Student of Yokoyama Sakujiro at the Kodokan from 1891, per his Wikipedia
biography; Wikipedia only
“In 1891, he moved to Tokyo and joined the Kodokan where he studied judo under
Yokoyama Sakujiro.”
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person
Iizuka Kunisaburō
sports_martial_artsKōdōkan Jūdō
Probable
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1 source
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Documented as a student at the Kodokan from 1891, with specific enrollment date
recorded in historical records
“one day he saw a man carrying a judo uniform and followed him to the Kodokan.
There he applied for entry, was found acceptable, and signed its enrollment book
on November 23, 1891 [...] Sakujiro Yokoyama was head instructor.”
— Judo: Kunisaburo Iizuka (Journal of Combative
Sport, July 2002)link
Identifiers
https://martial.is/entity/01KJJAWN29MA64W22606R3WD7H
Cite and reuse
CC BY-SA 4.0expand_more
Plain text
Muñoz, Frederico (YEAR_PLACEHOLDER). Yokoyama Sakujiro. In Martialis: Martial
Arts Lineage Database. https://martial.is/entity/01KJJAWN29MA64W22606R3WD7H - CC
BY-SA 4.0. Accessed ACCESSED_DATE_PLACEHOLDER.
BibTeX
@incollection{martialis_01KJJAWN29MA64W22606R3WD7H, author = {Muñoz, Frederico},
title = {Yokoyama Sakujiro}, booktitle = {Martialis: Martial Arts Lineage
Database}, year = {YEAR_PLACEHOLDER}, url =
{https://martial.is/entity/01KJJAWN29MA64W22606R3WD7H}, urldate =
{ACCESSED_DATE_PLACEHOLDER}, note = {CC BY-SA 4.0} }
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