Rocker was born in Stepney, East London in 1907 and named after the Spanish anarchist and mayor of Cádiz Fermín Salvochea.
Later he would also meet Augustin Souchy, Emma Goldman, Alexander Berkman, Erich Mühsam, Nestor Makhno, and Buenaventura Durruti.
[1][2] When World War I broke out, both his parents were interned as enemy aliens, along with many naturalised Germans and Russians, his father in 1914, his mother in 1916.
Mick Jagger bought a painting for £4,000 from him [2] depicting Basque refugees fleeing Franco's allies towards the French border.
His images were rarely overtly political and after his move to New York he had mostly concentrated on oil paintings of intimate everyday scenes.
He was deterred by the endless feuds and factionalism within Anarchism and acknowledged that capitalism had raised the standard of living.
He had 13 solo exhibitions in the last twenty years of his life, mostly at Stephen Bartley Gallery, in Chelsea, London.