Principality of Achaea: Map & History
The Principality of Achaea or Principality of Morea was one of the vassal states of the Latin Empire, which replaced the Byzantine Empire after the capture of Constantinople during the Fourth Crusade.
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The Principality of Achaea or Principality of Morea was one of the vassal states of the Latin Empire, which replaced the Byzantine Empire after the capture of Constantinople during the Fourth Crusade. It became a vassal of the Kingdom of Thessalonica, along with the Duchy of Athens, until Thessalonica was captured by Epirus in 1224. After this, Achaea became the dominant power in Greece, lasting continuously for 227 years and cumulatively for 229.
Modern Countries Once Part of Principality of Achaea
At its mapped extent, Principality of Achaea covered territory in 1 present-day country. The period shown is when the mapped borders include that country, and the note says how much of it.
Largest Present-Day Cities in Its Territory
Each opens on the live map inside Principality of Achaea's borders of that time.
Derived by testing mapped cities against this polity's dated territorial polygons, so the list is indicative and follows the borders in the source dataset.
Principality of Achaea: Key Facts
| Capital | Andravida |
|---|---|
| Official language | French |
| Religions | Catholic Church, Greek Orthodoxy |
| Founded | 1205 |
| Dissolved | 1430 |
Facts from Wikidata Q332005 (CC0).
Principality of Achaea Map Over Time
Dated world maps on which Principality of Achaea appears, with the other states of the time.
Principality of Achaea Timeline
Key historical inflections from foundation to peak territorial expansion
Expansion to peak recorded area of 19,840 km² in 1208 CE.
Principality of Achaea: Frequently Asked Questions
When did Principality of Achaea exist?
Principality of Achaea is dated to 1206 CE – 1439 CE, in the High & Late Middle Ages era.
What was the capital of Principality of Achaea?
The capital of Principality of Achaea was Andravida (1205–1249), Mystras (1249–1261), Aetos (1453–1454).
How large was Principality of Achaea at its peak?
At its peak in 1208 AD Principality of Achaea covered about 19,840 km².
How did the map of Principality of Achaea change over time?
Principality of Achaea appears on 2 dated world maps in the atlas, from 1300 CE to 1400 CE. Each shows its borders in that year next to the other states of the time.
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