People
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Paul Lafargue Paul Lafargue
Marx's son-in-law, author of The Right to Be Lazy, first socialist deputy in the French parliament
Political and party leadership · French Workers' Party (POF)
1842–1911
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Jules Guesde Jules Guesde
Veteran founder of French Marxist socialism who entered the Union sacrée government in 1914
Political and party leadership · France state institutions
1845–1922
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Marcel Cachin Marcel Cachin
Leader who took the SFIO majority into the Comintern at Tours in 1920, founding the French Communist Party, and ran L’Humanité
Political and party leadership · French Communist Party (PCF)
1869–1958