Here are some basics on Darius the Great (Dārayavauš).
- Sources on Darius are Herodotus, the records from Darius’ relief at Bīsotūn, texts and monuments from Persepolis and elsewhere, and occasional literary references.
- He was born in c. 550 B.C. to Vištāspa (Hystaspes) and Vardagauna.
- He ousted the successor of Cambyses and became the third/fourth ruler of the Achaemenid Dynasty of Persia in 522.
- He was related to the earlier Achaemenids through marriage and possibly a shared ancestor, the eponymous Achaemenes.
- He established a strong military-based government for his empire, the largest to date (ppn. estimate 50 million), divided into satrapies.
- He is considered to have been a follower of Ahura Mazda, and perhaps a Zoroastrian.
- His rule ended in 486 B.C.