In Greek mythology, Eurybius (Ancient Greek: Εὐρύβιος) was a prince of Tiryns, son of King Eurystheus and Antimache, slain with his brothers when Athens refused to surrender the Heracleidae — distinct from Eurybius son of Neleus among Nestor's brothers.
Adapted from Wikipedia, "Eurybius" · CC BY-SA 4.0
I.Son of Eurystheus
Apollodorus counts Eurybius among the sons of Eurystheus by Antimache daughter of Amphidamas — brother of Admete, Alexander, Iphimedon, Mentor, and Perimedes. When Athens sheltered the Heraclids, the Athenians killed Eurybius and his brothers in the war that followed; their deaths preceded Eurystheus' own flight and slaying by Hyllus at the Scironian cliffs. An alternate anecdote has Eurybius, Perimedes, and Eurypylus slain by Heracles after serving him a lesser portion at a sacrificial meal.
II.Homonyms
This atlas entry (eurybius-eurystheus) is Eurystheus' son fallen in the Heraclid war. Distinct from Eurybius son of Neleus and Chloris, killed by Heracles with his brothers save Nestor, and from a Lamian centaur commander in Nonnus' Dionysiaca.