Dipoenus and Scyllis
Dipoenus and Scyllis were early ancient Greek sculptors from Crete who worked together and were said to have been pupils of Daedalus. Pliny assigns to them the date 580 BC, and says that they worked at Sicyon, which city from their time onwards became one of the great schools of sculpture. They also made statues for Cleonae and Argos. They worked in wood, ebony and ivory, and apparently also, in marble.
It is curious that no inscription bearing their names has come to light.
About 500 BC: (Information originally from Herodotus): "During a naval campaign the Greek Scyllis was taken aboard ship as prisoner by the Persian King Xerxes I. When Scyllis learned that Xerxes was to attack a Greek flotilla, he seized a knife and jumped overboard. The Persians could not find him in the water and presumed he had drowned. Scyllis surfaced at night and made his way among all the ships in Xerxes's fleet, cutting each ship loose from its moorings; he used a hollow reed as snorkel to remain unobserved. Then he swam nine miles (15 kilometers) to rejoin the Greeks off Cape Artemisium."