Cyrus the Great (June 589 BC — August 530 BC) founded the Achaemenid dynasty of Persia. As a young man he was the leader of the Persians of Anshan.
Cyrus revolted against the Median king Astyages and claimed the title 'Shah of Iran' in 569 BC.
In 549 BC he fought and defeated king Croesus of Lydia, who had invaded his empire as a retaliation attack for the killing of Astyages. Croesus and Astyages had been allies.
He conquered the Babylonian Empire in 539 BC and was welcomed into Babylon while approaching the city with his army.
Cyrus died fighting the Massagetae in Sogdia. He was buried in Pasargadae, where his tomb still stands today.