Gunji Koizumi
小泉軍治
Born 1885-07-08, Komatsuka, Inashiki, Ibaraki Prefecture
Died
1965-04-15, Putney, London
Also known as
G.K.
Description
Japanese judoka and jujutsuka. Founder of the Budokwai (1918), known as the 'Father of British Judo.' Studied Tenjin Shinyo-ryu under Nobushige Tago, later Shin-Shin-Ryu under Yamada Nobukatsu and Akishima-Ryu under Akishima Tsunejiro. Converted to Kodokan Judo in 1920 under Jigoro Kano. Co-founded the British Judo Association (1948) and European Judo Union (1948). Author of 'My Study of Judo' (1960). Held 8th dan Kodokan.
Teachers (3)
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Tago Nobushigesports_martial_artsTenjin Shin'yō-ryū ConfirmedConfirmedDocumented in Gunji Koizumi's own autobiographical account in 'My Study of Judo' (1960)The evidence establishes the claim: it is sufficient and consistent, and any conflicting evidence is resolved.location_onSeibukan badge (1901)
fact_checkassessed by FSMverified
2 sources expand_moreFrederico MuñozResearcher, Martialisfact_checkDocumented in Gunji Koizumi's own autobiographical account in 'My Study of Judo' (1960)visibilityFirst-hand -
Yamada Nobukatsu(1904)
fact_checkassessed by FSMverified
2 sources expand_moreFrederico MuñozResearcher, Martialisfact_checkDocumented in Gunji Koizumi's autobiographical account and WikipediavisibilityFirst-hand -
Akishima Tsunejiro(1905–1906)
fact_checkassessed by FSMverified
2 sources expand_moreFrederico MuñozResearcher, Martialisfact_checkDocumented in Gunji Koizumi's autobiographical account and WikipediavisibilityFirst-hand
Lineage
Ranks (5)
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military_tech2 dan ConfirmedConfirmedIndependent sources state it.The evidence establishes the claim: it is sufficient and consistent, and any conflicting evidence is resolved.Dan-Kyu System (1920)granted by Kanō Jigorō, Kodokan
fact_checkassessed by FSMverified
2 sources expand_moreFrederico MuñozResearcher, Martialisfact_checkIndependent sources state it.military_tech4 dan ProbableProbableDocumented in Wikipedia and Budokwai historical sourcesThe evidence favours the claim and nothing credible contradicts it, but it falls short of establishing it.Dan-Kyu System (1932)granted by Kodokanmilitary_tech6 dan ProbableProbableDocumented in Wikipedia and academic sourcesThe evidence favours the claim and nothing credible contradicts it, but it falls short of establishing it.Dan-Kyu System (1948)granted by Kodokanmilitary_tech7 dan ProbableProbableDocumented in Wikipedia and academic sourcesThe evidence favours the claim and nothing credible contradicts it, but it falls short of establishing it.Dan-Kyu System (1951)granted by Kodokanmilitary_tech8 dan ProbableProbableAwarded 17 November 1962 per Japanese sources (Kudo 1965); confirmed by Black Belt Magazine Nov 1965The evidence favours the claim and nothing credible contradicts it, but it falls short of establishing it.Dan-Kyu System (1962-11-17)granted by Kodokanfact_checkassessed by FSMverified
2 sources expand_moreFrederico MuñozResearcher, Martialisfact_checkAwarded 17 November 1962 per Japanese sources (Kudo 1965); confirmed by Black Belt Magazine Nov 1965
Offices held (1)
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corporate_farePresidentBudokwai ProbableProbableWikipedia only.The evidence favours the claim and nothing credible contradicts it, but it falls short of establishing it.1918
Students (3)
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Moshé Feldenkraissports_martial_artsKōdōkan Jūdō ConfirmedConfirmedFeldenkrais's own preface to Higher Judo acknowledges Koizumi as someone he learned a great deal from (primary); de Crée (2013) confirms from the Budokwai dan-rank register that Feldenkrais joined the Budokwai in 1948; two other sources place him studying judo under Koizumi at the London Budokwai.The evidence establishes the claim: it is sufficient and consistent, and any conflicting evidence is resolved.location_onBudokwai badge (1948–1950)
fact_checkassessed by FSMverified
5 sources expand_moreFrederico MuñozResearcher, Martialisfact_checkFeldenkrais's own preface to Higher Judo acknowledges Koizumi as someone he learned a great deal from (primary); de Crée (2013) confirms from the Budokwai dan-rank register that Feldenkrais joined the Budokwai in 1948; two other sources place him studying judo under Koizumi at the London Budokwai.visibilityFirst-hand“It has been my good fortune to meet Mr. G. Koizumi, from which I have learned a great deal. The clarity of his knowledge is equal to the generosity with which he imparts it”
“In London he deepened his friendship and judo practice with legendary practitioners Gunji Koizumi and Trevor Leggett.”
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Sarah Mayersports_martial_artsKōdōkan Jūdō ConfirmedConfirmedWikipedia states Mayer first trained in judo by Gunji Koizumi at the Budokwai in the 1920s; Callan/Heffernan/Spenn confirm the ladies' classes were taught by Koizumi at the Budokwai, which Mayer joined in 1926.The evidence establishes the claim: it is sufficient and consistent, and any conflicting evidence is resolved.location_onBudokwai badge (1926–1933)
fact_checkassessed by FSMverified
2 sources expand_moreFrederico MuñozResearcher, Martialisfact_checkWikipedia states Mayer first trained in judo by Gunji Koizumi at the Budokwai in the 1920s; Callan/Heffernan/Spenn confirm the ladies' classes were taught by Koizumi at the Budokwai, which Mayer joined in 1926. -
Trevor Leggettsports_martial_artsKōdōkan Jūdō ProbableProbableSingle source.The evidence favours the claim and nothing credible contradicts it, but it falls short of establishing it.location_onBudokwai badge
fact_checkassessed by FSMverified
1 source expand_moreFrederico MuñozResearcher, Martialisfact_checkSingle source.“At the age of 16, therefore, the sport he chose was judo and he started taking lessons at the London Budokwai. After training under the famous judo masters Yukio Tani and Gunji Koizumi, he made swift progress”
Sources
visibilityFirst-hand
Identifiers
https://martial.is/entity/01KY52HE48XM1KHDGKBV98YRQ2
Cite and reuse
CC BY-SA 4.0expand_more
Plain text
Muñoz, Frederico (YEAR_PLACEHOLDER). Gunji Koizumi. In Martialis: Martial Arts
Lineage Database. https://martial.is/entity/01KY52HE48XM1KHDGKBV98YRQ2 - CC
BY-SA 4.0. Accessed ACCESSED_DATE_PLACEHOLDER.
BibTeX
@incollection{martialis_01KY52HE48XM1KHDGKBV98YRQ2, author = {Muñoz, Frederico},
title = {Gunji Koizumi}, booktitle = {Martialis: Martial Arts Lineage Database},
year = {YEAR_PLACEHOLDER}, url =
{https://martial.is/entity/01KY52HE48XM1KHDGKBV98YRQ2}, urldate =
{ACCESSED_DATE_PLACEHOLDER}, note = {CC BY-SA 4.0} }
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