Francesc Pi i Margall

Francesc Pi i Margall (Spanish: Francisco Pi y Margall) (29 April 1824 – 29 November 1901) was a Spanish federalist and republican politician and theorist who served as president of the short-lived First Spanish Republic in 1873. He was also a historian, philosopher, romanticist writer, and was also the leader of the Federal Democratic Republican Party and the Democratic Party. Pi was turned into a sort of secular saint in his time.

A disciple of Pierre-Joseph Proudhon, his theoretical contributions left a lasting effect on the development of the anarchist movement in Spain. Provided by Wikipedia