The name Marinus originates from the Roman family name Marinus, which is derived either from the name Marius or from the Latin word 'marinus' meaning 'of the sea'. It carries connotations of the sea and maritime life. Saint Marinus, a 4th-century stonemason, is a notable historical figure associated with this name, having built a chapel on Monte Titano, which is now part of San Marino.