284 BC

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Events

By place

Roman Republic

* The Gallic tribe called the Senones, who has settled on the Adriatic coast north of Picenum, attacks Arretium in Etruria. While attempting to relieve this allied city, the Romans under the command of Lucius Caecilius Metellus Denter suffer a costly defeat in the Battle of Arretium. Aroused by this disaster, a Roman army under Manius Curius Dentatus invades the Senones' territory, defeating them and driving them out of the Italian peninsula.

Greece

* Pyrrhus of Epirus is driven out of Macedonia and back into Epirus by Lysimachus.

Asia Minor

* Ptolemy I's eldest (legitimate) son, Ptolemy Keraunos, whose mother, Eurydice, the daughter of Antipater, had been repudiated by the new King Ptolemy II, flees Egypt to the court of Lysimachus, the king of Thrace, Macedon and Asia Minor.
* Lysimachus' wife, Arsinoe, being keen to gain the succession to the kingdom of Thrace for her sons in preference to Agathocles (the eldest son of Lysimachus), intrigues against him with the help of her brother Ptolemy Keraunos. They accuse him of conspiring with Seleucus to seize the throne, and Agathocles is put to death. This atrocious deed by Lysimachus and his family arouses great indignation. Many of the cities in Asia Minor revolt and some of his most trusted friends desert him.
* Agathocles' widow Lysandra flees with their children and with Alexander, Agathocles' brother, to the court of Seleucus, who at once invades Lysimachus' territory in Asia Minor.

Births

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Deaths

* Lucius Caecilius Metellus Denter, Roman consul and general (killed in the Battle of Arretium) (b. c. 320 BC)
* Ardvates, governor and later ruler of Armenia who founds a dynasty that will rule until 211 BC
* Agathocles, son of King Lysimachus of Thrace