Anglicized spelling of Seán (pronounced ‘shawn’), Irish equivalent of John. The name has always been common in Ireland, but since the 1960s has frequently been chosen (usually without the accent) by parents who have no Irish connections. One influence on its popularity has been the actor Sean Connery (b. 1930), of James Bond fame.
Spanish: nickname for a darkhaired or dark-skinned man, from Old Spanish prieto ‘dark’, ‘black’. The adjective derives from the verb apretar ‘to squeeze or compress’, a metathesized form of apetrar, Late Latin appectorare ‘to hold close to the chest’ (from pectus, genitive pectoris, ‘chest’). The use as a color term seems to have derived originally from its application to rain clouds and fog.