From Wikipedia, the free encyclopedia This article includes a list of general references, but it remains largely unverified because it lacks sufficient corresponding inline citations. Please help to improve this article by introducing more precise citations. (May 2021) (Learn how and when to remove this template message) For the bodyguard of Alexander the Great, see Arybbas (somatophylax). Arybbas King of Epirus Reign 370 - 343 BC (with Neoptolemus I until 360 BC) Predecessor Alcetas I of Epirus Successor Alexander I of Epirus Spouse Troas (daughter of Neoptolemus I of Epirus) Issue Alcetas II of Epirus Aeacides of Epirus House Aeacidae Father Alcetas I Religion Ancient Greek religion Arybbas (Ancient Greek: Ἀρύββας[1] or Ἀρύβας[2]; 373-343/2 BC) was a king of the Molossians. Family Arybbas was a son of Alcetas I, brother of Neoptolemus I and grandfather of Pyrrhus. He married his niece Troas (sister of Olympias). Arybbas's oldest son was Alcetas II, who reigned as a king of Epirus from 313 BC to 303 BC. It is very probable that the Aryptaeus, king of the Molossians mentioned by Diodorus 18.11.1, who joined the Hellenic cause during the Lamian War, is Arybbas. Arybbas' second son was Aeacides king of Epirus (ruled 331-316, 313 BC). Biography Upon the death of their father Alcetas I in 370 BCE, Arybbas and his brother Neoptolemus I divided the kingdom of Epirus in two and each ruled their own part, until Neoptolemus died around 360 BCE and Arybbas became king of all of Epirus. In ca. 360 BC, against an Illyrian attack, Arybbas evacuated his non-combatant population to Aetolia and let the Illyrians loot freely. The stratagem was successful, and the Molossians amassed upon the Illyrians and defeated them.[3] Arybbas ruled Epirus until 343/2 BC, when he was driven into exile by Philip II, who placed Alexander I on the throne. He was also an Olympic and Pythian victor in tethrippon (chariot race).