Ctesiphon
Ardashir I takes power at Ctesiphon and is crowned there
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Original prompt & settings (JSON) ↗Ardashir was crowned in the royal centre of the dynasty he had just displaced — and the city kept its job.
Crowned in 226, or captured in 227
Having overthrown the Arsacid king Artabanus, the Sasanian ruler Ardashir I took Ctesiphon in Mesopotamia and folded the former Parthian royal centre into his new empire; sources cited by Encyclopaedia Iranica place his formal coronation there in 226.
Another Iranica entry dates the city's capture to 227 instead. No exact day is supported by either.
The decisive battle was two years earlier
Arsacid power had already been broken at Hormozdgan in 224, when Artabanus was defeated — two years before the conventional coronation date.
The sources support a sequence rather than a climax: Artabanus's defeat, then Ctesiphon's capture, then the coronation. They do not support a single datable battle inside the city in 226.
The city kept working
Calling this a fall suggests destruction or a sack. What changed was ownership — the old Arsacid winter residence and administrative centre passed to a new royal house.
Ctesiphon went on as the capital and coronation city of the Sasanian Empire rather than being abandoned or destroyed in the transfer.
Sources
Researched 23 Aug 2026 5 sources not yet audited Date disputed
How this was checked
Researched from the web into a fact sheet and rewritten from that sheet. This article has not yet had an independent model audit. How the pipeline works →
Date disputed. Sources disagree; the research places it at ~0226.
What the sources leave uncertain
- No exact day is supported. Even the year is unstable: sources place Ardashir's Ctesiphon coronation in 226, while another Iranica entry dates the capture to 227. Source: https://www.iranicaonline.org/articles/ardasir-i/ and https://www.iranicaonline.org/articles/capital-cities/
- The decisive end of the Arsacid king's power occurred at Hormozdgan in 224, two years before the conventional Ctesiphon coronation date. Source: https://www.iranicaonline.org/articles/ardasir-i/
- The sources support a sequence—Artabanus's defeat, Ctesiphon's capture, then coronation—more clearly than a single datable 'Battle of Ctesiphon' in 226.