Seleucus was born in the Province of Upper Macedonia in Orestis, the son of a retainer of Philip II of Macedon. Because of this, he became friends with Prince Alexander, his son, and was known to be a great tactician. When Alexander became the King of Macedon, he was effectively his Prime Minister, advising him on what to do with his army and working well as an administrator, alongside General Parmenion. Seleucus led Alexander's army's vanguards on many occasions, working as one of his trusted companions who was not afraid to carry out risky tasks.
When Alexander died, along with the other Diadochi (Alexander's successors), Seleukos was entrusted with a satrapy that he was based out of. Seleucus had control of the Middle East, and later took over Asia Minor following the destruction of the Antigonids at the Battle of Ipsus in 301 BC. Afterwards, Seleucus fought with the Ptolemaic Empire to the southwest, Pontus to the northwest, the Nabateans to the south, the Mauryan Empire to the southeast, and the Artaxiad Empire to the north. Seleucus fought a series of successful campaigns, and after killing Lysimachus at the Battle of Corupedium, took the Macedonian throne for himself, but was assassinated shortly after by Ptolemy Keraunos.
|King of the Seleucid Empire|
Alexander IV of Macedon
|305-281 BC||Succeeded by:|
Antiochus I of Syria