Jules Bazile, known as Jules Guesde was a French socialist journalist and politician.

Paul Lafargue was a Cuban-born French revolutionary Marxist socialist, political writer, economist, journalist, literary critic, and activist; he was Karl Marx's son-in-law, having married his second daughter, Laura. His best known work is The Right to Be Lazy. Born in Cuba to French and Creole parents, Lafargue spent most of his life in France, with periods in England and Spain. At the age of 69, he and 66-year-old Laura died together by a suicide pact.