Sergio Castell

Sergio Castell' (7 May 1924-28 November 1966 was a founding member of Barzona Libre. Castell pressed for a political solution to the Barzuna people's issues, which was the movement's direction in 1961 and 1962. He clashed with others, particularly Sebastian Encines over this, leaving in 1963 as BL moved to using violent means.

Castell became an informant to the National Police in 1965; he was subject to an attempted murder that year but sources conflict on the attack being retribution for helping the police or it being the reason he helped them.

Castell died in 1966 from stomach issues.