1) Mythological archetype 
In Etruscan mythology, Tyrrhenus (in Τυρρηνός) was one of the founders of the Etruscan League of twelve cities, along with his brother Tarchon. Herodotus describes him as the saver of the Etruscans, because he led them from Lydia to Etruria. His name was given to the Etruscan people by the Greeks. The Romans extended this use to the sea we...