Amphion and Zethus fit of madness and became a nightingale. After the deaths of Amphion and Zethus, Laius returned to Thebes and became king. Compare with Castor and Polydeuces (the Dioscuri) of Greece, and with Romulus and Remus of Rome. Plato, "Gorgias", 485e. Amphion and Zethus Amphion () and Zethus (, "Zēthos") were, in ancient Greek mythology, the twin sons of Zeus (or Theobus) by Antiope. They are important characters in one of the two founding myths of the city of Thebes, because they constructed the city's walls. Amphion and Zethus were the sons of Antiope, who fled in shame to Sicyon after
Leda (river) source rivers Sagter Ems and Ohe). The lower until the port of Leer are navigable for large (Class Vb) ships, a further 7 km until the mouth of the Jümme for Class II ships and a further 16 km until the Elisabethfehnkanal are navigable but not classified.. In East Frisia the Sagter Ems, a headstream of the Leda, is also known as the Leda. Leda (river) The Leda is a river in north-western Germany in the state of Lower Saxony. It is a right tributary of the Ems and originates at the confluence of the Sagter Ems and the Dreyschloot