Amphion and Zethus
Lycus, as king and ruler of Thebes, waged war against Sicyon to avenge his brother and niece. This time, the result went in Thebes' favor, and King Epopeus was slain. However, Lycus and his wife Dirce proceeded to treat Antiope cruelly. Antiope was imprisoned, but she later contrived to escape, and was reunited with her twin sons, Amphion and Zethus.