Duchy of Athens

Duchy of Athens
Δουκᾶτον Ἀθηνῶν (Greek)
Ducat d'Atenes (Catalan)
1205–1458
Arms of the Duchy under the de la Roche (first dynasty)
The Lordship of Athens and the other Greek and Latin states of southern Greece, c. 1210
StatusVassal state of various countries, de facto autonomous
CapitalAthens, Thebes
38°0′14″N 23°43′1.6″E / 38.00389°N 23.717111°E / 38.00389; 23.717111
Common languagesFrench (until 1311)
Catalan (1311–88)
Greek (popularly and officially after 1388)
Religion
Catholic Church (state religion)
Greek Orthodoxy (popularly)
GovernmentFeudal monarchy
Duke 
Historical eraMiddle Ages
1204
 Duchy established
1205
1311
 Acciaioli rule
1388
 Tributary to Morea
1444
 Ottoman conquest
1458
CurrencyDenier tournois
Preceded by
Succeeded by
Byzantine Empire
Ottoman Empire
Today part ofGreece

The Duchy of Athens (Greek: Δουκᾶτον Ἀθηνῶν, Doukaton Athinon; Catalan: Ducat d'Atenes) was one of the Crusader states set up in Greece after the conquest of the Byzantine Empire during the Fourth Crusade as part of the process known as Frankokratia, encompassing the regions of Attica and Boeotia, and surviving until its conquest by the Ottoman Empire in the 15th century.