Teachers (1)

• 
  Yokoyama Sakujiro

  linkKōdōkan Jūdō 1

  Uncertain

  Student of Yokoyama Sakujiro at Kodokan from 1891, as documented in Wikipedia biography, but no direct source checked

  sports_kabaddiKodokan badge (1891)

  expand_morefact_checkassessed by FSMverified

  Frederico Muñoz

  Researcher, Martialis

  1 source

  fact_check

  Student of Yokoyama Sakujiro at Kodokan from 1891, as documented in Wikipedia biography, but no direct source checked

  assessed by FSMverified

  Frederico Muñoz

  Researcher, Martialis

  "In 1891, he moved to Tokyo and joined the Kodokan where he studied judo under Yokoyama Sakujiro."

  — Hajime Isogai - Wikipedialink

Ranks (1)

• linkKōdōkan Jūdō

  military_tech10 dan 3

  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

  Dan-Kyu System (1923-12-22)

  granted by Kodokan

  expand_morefact_checkassessed by FSMverified

  Frederico Muñoz

  Researcher, Martialis

  1 source

  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

  assessed by FSMverified

  Frederico Muñoz

  Researcher, Martialis

  "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

  linkKōdōkan Jūdō 2

  Probable

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

  expand_morefact_checkassessed by FSMverified

  Frederico Muñoz

  Researcher, Martialis

  1 source

  fact_check

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

  assessed by FSMverified

  Frederico Muñoz

  Researcher, Martialis

  "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
• Ok
  Okano Yoshitaro

  linkKōdōkan Jūdō 2

  Probable

  Enrolled at Kodokan in 1906, studied under Kodokan instructors

  sports_kabaddiKodokan badge (1906)

  expand_morefact_checkassessed by FSMverified

  Frederico Muñoz

  Researcher, Martialis

  1 source

  fact_check

  Enrolled at Kodokan in 1906, studied under Kodokan instructors

  assessed by FSMverified

  Frederico Muñoz

  Researcher, Martialis

  "20歳の時に講道館へ入門する"

  — 岡野好太郎 | 講道館 (Kodokan Judo Institute)linkhistory
• Mi
  Michigami Haku

  linkKōdōkan Jūdō 3

  Confirmed

  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.

  (1934-1938)

  expand_morefact_checkassessed by FSMverified

  Frederico Muñoz

  Researcher, Martialis

  1 source

  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.

  assessed by FSMverified

  Frederico Muñoz

  Researcher, Martialis

  "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

  linkKōdōkan Jūdō 3

  Confirmed

  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.

  (1934-1935)

  expand_morefact_checkassessed by FSMverified

  Frederico Muñoz

  Researcher, Martialis

  1 source

  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.

  assessed by FSMverified

  Frederico Muñoz

  Researcher, Martialis

  "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 linkinfo

Honors (1)

• receipt_longhanshiHanshi 2

  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)

  Title (1913-04-01)

  granted by Greater Japan Martial Virtue Society

  expand_morefact_checkassessed by FSMverified

  Frederico Muñoz

  Researcher, Martialis

  1 source

  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)

  assessed by FSMverified

  Frederico Muñoz

  Researcher, Martialis

  "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linkhistory

Sources