Francesc Ferrer i Guàrdia, Spanish philosopher and academic (died 1909)

Francesc Ferrer i Guàrdia, widely known as Francisco Ferrer, was a Spanish radical freethinker, anarchist, and educationist behind a network of secular, private, libertarian schools in and around Barcelona. His execution, following a revolt in Barcelona, propelled Ferrer into martyrdom and grew an international movement of radicals and libertarians, who established schools in his model and promoted his schooling approach.

January 10 is the 10th day of the year in the Gregorian calendar; 355 days remain until the end of the year.