Teachers (1)

• 
  Yokoyama Sakujiro

  sports_martial_artsKōdōkan Jūdō Probable

  Probable

  Student of Yokoyama Sakujiro at the Kodokan from 1891, per his Wikipedia biography; Wikipedia only

  The evidence favours the claim and nothing credible contradicts it, but it falls short of establishing it.

  location_onKodokan badge (1891)

  fact_checkassessed by FSMverified

  Frederico Muñoz

  Researcher, Martialis

  1 source expand_more

  fact_check

  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.”

  — Hajime Isogai - Wikipedialink history

Lineage

• Kōdōkan JūdōYokoyama Sakujiro ← Kanō Jigorō · 2 generations

Ranks (1)

• sports_martial_artsKōdōkan Jūdō

  military_tech10 dan Confirmed

  Confirmed

  Promoted together with Shuichi Nagaoka to become the first living holders of the 10th Dan, as documented on Judo Channel website and multiple sources

  The evidence establishes the claim: it is sufficient and consistent, and any conflicting evidence is resolved.

  Dan-Kyu System (1923-12-22)

  granted by Kodokan

  fact_checkassessed by FSMverified

  Frederico Muñoz

  Researcher, Martialis

  1 source expand_more

  fact_check

  Promoted together with Shuichi Nagaoka to become the first living holders of the 10th Dan, as documented on Judo Channel website and multiple sources

  visibilityFirst-hand

  “On December 22, 1923, he was promoted together with Shuichi Nagaoka to become the first living holders of the 10th Dan.”

  — Hajime Isogai - Kodokan Judo Institutelink

Students (4)

• 
  Yano Takeo

  sports_martial_artsKōdōkan Jūdō Probable

  Probable

  Believed to have trained at Dai Nippon Butoku Kai academy in Kyoto under Hajime Isogai, based on blog research sources

  The evidence favours the claim and nothing credible contradicts it, but it falls short of establishing it.

  fact_checkassessed by FSMverified

  Frederico Muñoz

  Researcher, Martialis

  1 source expand_more

  fact_check

  Believed to have trained at Dai Nippon Butoku Kai academy in Kyoto under Hajime Isogai, based on blog research sources

  “There is not much information known about Takeo Yano, but it is believed he may have been born in 1909 and trained at the Dai Nippon Butoko Kai academy in Kioto under famed Judoka, Hajime Isogai.”

  — The Eastern Demon, Takeo Yano (Simon BJJ) link
• person
  Okano Yoshitaro

  sports_martial_artsKōdōkan Jūdō Probable

  Probable

  The Kodokan's own hall-of-fame biography states Okano enrolled at the Kodokan in 1906; no independent corroboration was found

  The evidence favours the claim and nothing credible contradicts it, but it falls short of establishing it.

  history_eduTradition only

  Tradition only: every supporting source is the lineage's own account of itself

  location_onKodokan badge (1906)

  fact_checkassessed by FSMverified

  Frederico Muñoz

  Researcher, Martialis

  1 source expand_more

  fact_check

  The Kodokan's own hall-of-fame biography states Okano enrolled at the Kodokan in 1906; no independent corroboration was found

  visibilityFirst-hand

  “20歳の時に講道館へ入門する”

  — 岡野好太郎 | 講道館 (Yoshitaro Okano - Kodokan Judo Institute)link history info

  sports_martial_artsMuso-ryu Shinjujutsu Probable

  Probable

  The Kodokan's own hall-of-fame biography states Okano was a student of Hajime Isogai at the Dai Nippon Butoku Kai Martial Arts Teacher Training School; no independent corroboration was found

  The evidence favours the claim and nothing credible contradicts it, but it falls short of establishing it.

  history_eduTradition only

  Tradition only: every supporting source is the lineage's own account of itself

  location_onBudo Senmon Gakko badge

  fact_checkassessed by FSMverified

  Frederico Muñoz

  Researcher, Martialis

  1 source expand_more

  fact_check

  The Kodokan's own hall-of-fame biography states Okano was a student of Hajime Isogai at the Dai Nippon Butoku Kai Martial Arts Teacher Training School; no independent corroboration was found

  visibilityFirst-hand

  “この武術教員養成所の柔道教授は、磯貝一、永岡秀一らであった。[...]岡野も磯貝・永岡を師と仰ぎ”

  — 岡野好太郎 | 講道館 (Yoshitaro Okano - Kodokan Judo Institute)link history info
• person
  Michigami Haku

  sports_martial_artsKōdōkan Jūdō Probable

  Probable

  The Memorial site's French curriculum vitae lists Isogai (10th dan, his grade during his lifetime) among Michigami's successive judo masters, coinciding with his Busen years at the Kyoto Budo Senmon Gakkō 1934-1938.

  The evidence favours the claim and nothing credible contradicts it, but it falls short of establishing it.

  (1934–1938)

  fact_checkassessed by FSMverified

  Frederico Muñoz

  Researcher, Martialis

  1 source expand_more

  fact_check

  The Memorial site's French curriculum vitae lists Isogai (10th dan, his grade during his lifetime) among Michigami's successive judo masters, coinciding with his Busen years at the Kyoto Budo Senmon Gakkō 1934-1938.

  visibilityFirst-hand

  “Successivement ce furent les Maîtres Prestigieux (grade de leur vivant) AKAMATSU 7e Dan ISOGAI 10e Dan TABATA 10e Dan - qui introduisit le "O UCHI MATA" dans le NAGE - NO - KATA FUKUSHIMA 9e Dan KURIHARA 10e Dan MORISHITA 9e Dan EBI 9e Dan”

  — Curriculum Vitae de Michigami Shi-han, PROFESSEURS de JUDO de MICHIGAMI Haku (haku-michigami.com)link
• 
  Sarah Mayer

  sports_martial_artsKōdōkan Jūdō Probable

  Probable

  Callan/Heffernan/Spenn describe Mayer taking an introduction to Isogai Hajime, head of the Kyoto Butokuden, training in Kyoto, and undertaking the three-day shōdan grading under Professor Isogai at the Butokukai.

  The evidence favours the claim and nothing credible contradicts it, but it falls short of establishing it.

  (1934–1935)

  fact_checkassessed by FSMverified

  Frederico Muñoz

  Researcher, Martialis

  1 source expand_more

  fact_check

  Callan/Heffernan/Spenn describe Mayer taking an introduction to Isogai Hajime, head of the Kyoto Butokuden, training in Kyoto, and undertaking the three-day shōdan grading under Professor Isogai at the Butokukai.

  “she took an introduction to Isogai Hajime, the head of the Kyoto Butokuden [...] she was also invited to train in Kyoto whenever Yamamoto was away [...] She then returned to the Butokukai in Kyoto, and to Professor Isogai [...] she finally achieved shōdan or first dan.”

  — Callan, Mike; Heffernan, Conor; Spenn, Amanda. (2018). Women's Jūjutsu and Judo in the Early Twentieth-Century: The Cases of Phoebe Roberts, Edith Garrud, and Sarah Mayer link info

Honours (1)

• receipt_longhanshiHanshi Probable

  Probable

  Awarded the title of hanshi (範士) by the Dai Nippon Butoku Kai in April 1913, as documented in Japanese Wikipedia (source seems legit but not checked yet)

  The evidence favours the claim and nothing credible contradicts it, but it falls short of establishing it.

  Title (1913-04-01)

  granted by Greater Japan Martial Virtue Society

  fact_checkassessed by FSMverified

  Frederico Muñoz

  Researcher, Martialis

  1 source expand_more

  fact_check

  Awarded the title of hanshi (範士) by the Dai Nippon Butoku Kai in April 1913, as documented in Japanese Wikipedia (source seems legit but not checked yet)

  “1913年（大正2年）4月、大日本武徳会柔道範士の称号を授与される。”

  — 磯貝一 - 日本語版ウィキペディアlink history

Sources

Identifiers