The Ancients
The Ancients

Shapur I: Rome's Greatest Enemy?

August 9, 2026

AI Summary

5 min read

“We made prisoner ourselves with our own hands Valerian Caesar and others, chiefs of the army, the Praetorian prefect, the senators.” That is Shapur I’s own account of the moment he captured a Roman emperor alive in 260 AD—something no enemy of Rome had ever done before. The Sasanian King of Kings didn’t just defeat Rome’s armies; he killed one emperor (Gordian III, by his own claim) and captured another (Valerian), sacked Antioch, and pushed deep into Syria and Anatolia at the height of Rome’s third-century crisis. Yet as historian Dr. Eve McDonald explains, Shapur’s story is far more than a string of Roman humiliations—it is the story of how a new dynasty rebuilt a fading empire, fused Parthian and Persian legitimacy, and created a superpower that would face Rome as an equal for the next 400 years.

The Sasanian Rise: From Vassals to Kings of Kings

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What you'll learn

  • 1 (02:05) **Shapur I: The Man Who Captured a Roman Emperor** - Introduction to Shapur I, the Sasanian King of Kings who defeated Rome, captured Emperor Valerian, and fueled the Third Century Crisis.
  • 2 (03:36) **The World Before Shapur: The Parthian Empire** - Dr. Eve McDonald sets the stage: the declining Parthian (Arsacid) Empire and the Roman invasions that destabilized it.
  • 3 (06:17) **The Rise of the Sasanians: Ardashir's Rebellion** - The Sasanian dynasty overthrows the Parthian king, establishing a new order rooted in Zoroastrian legitimacy.
  • 4 (10:50) **Shapur's Birth and Legitimacy: A Knitted Dynasty** - The contested origins of Shapur, possibly the son of Ardashir and a Parthian princess, are explored as a key to his authority.
  • 5 (14:43) **The Education of a Prince** - Shapur's upbringing as a co-ruler, trained in Zoroastrian tradition, languages, and military command.
  • 6 (16:28) **The Sources: Shapur's Own Inscriptions** - The primary evidence for Shapur's life comes from his own detailed inscriptions and sculptural reliefs, offering a unique Persian perspective.
  • 7 (18:59) **Ardashir's Achievements and the Sasanian State** - The empire Shapur inherited: a consolidated but regionally diverse realm, ruled through powerful Parthian families.

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Show Notes

Few rulers humbled Rome quite like Shapur I. A King of Kings, he rebuilt the Sasanian Persian Empire, defeated Roman armies and captured Emperor Valerian in one of antiquity's most remarkable military triumphs.


In this episode of The Ancients, Tristan Hughes is joined by Eve MacDonald to explore the rise of Shapur the Great. Why did he find so much success against the ancient Roman behemoth? How did he help forge a new Persian superpower on the Empire’s eastern frontier? And is he worthy to stand shoulder to shoulder with the likes of Hannibal, Boudicca, and Spartacus in the Roman villain hall of fame?


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Presented by Tristan Hughes. Editor is Aidan Lonergan. The producer is Joseph Knight. Video producer is McKenna Fernandez, channel manager is Vilde Osknes.The senior producer is Anne-Marie Luff.

All music courtesy of Epidemic Sounds

The Ancients is a History Hit podcast.


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