About Ko Janssens
Lived 1889 – 1970 (aged 80). Ko Janssens was a Dutch boxer.
Jacobus Cornelius "Ko" Janssens (20 December 1889, Rotterdam - 21 August 1970, Epe ) was a Dutch boxer who competed in the 1920 Summer Olympics. In 1920 he was eliminated in the first round of the lightweight class after losing his fight to Frank Cassidy.
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Important facts
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Contemporaries
People whose lives overlapped Ko Janssens's
Frequently asked questions
Who was Ko Janssens?
Olympic boxer
When was Ko Janssens born?
Ko Janssens was born on 20 December 1889 in Rotterdam.
When did Ko Janssens die?
Ko Janssens died on 21 August 1970.
What was Ko Janssens's occupation?
Ko Janssens was a boxer.
What nationality was Ko Janssens?
Ko Janssens was Dutch.
Sources & further reading
Cite this page
APA: Biography.guide. (2026). Ko Janssens. https://biography.guide/ko-janssens/
MLA: "Ko Janssens." Biography.guide, https://biography.guide/ko-janssens/.
Chicago: "Ko Janssens." Biography.guide. https://biography.guide/ko-janssens/.
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