Duchy of Kalisz

Duchy of Kalisz Księstwo kaliskie (Polish) Ducatus Calisiensis (Latin)
1177–1279
Flag Coat of arms
Map of the Greater Poland with the political division.
Status	Fiefdom within the Duchy of Poland (1177–1227) Independent state (1227–1279)
Capital	Kalisz
Official languages	Polish Latin
Religion	Roman Catholic
Government	Feudal duchy
Duke
• 1177–1181 (first)	Casimir II the Just
• 1273–1279 (last)	Przemysł II
Historical era	High Middle Ages
• Partition of the Duchy of Greater Poland	1177
• Unification of the Duchy of Greater Poland	1279
Preceded by Succeeded by Duchy of Greater Poland Duchy of Greater Poland

The Duchy of Kalisz^[a] was a feudal district duchy in the Greater Poland, centered on the Kalisz Region. Its capital was Kalisz.^[1] The state was established in 1177, in the partition of the Duchy of Greater Poland, after the rebellion against Mieszko III. Duke Casimir II the Just of the Piast dynasty become its first ruler.^[2] It existed until 1279, when, it got united with duchies of Gniezno and Poznań, under the rule of Przemysł II, forming the Duchy of Greater Poland.^[3] It remained a fiefdom within the Duchy of Poland, until 1227, and after that, it become an independent state.^[4]

Andrzej Wędzki, Kalisz w państwie wczesnopiastowskim i w okresie rozbicia dzielnicowego. In: Władysław Rusiński (redactor), Dzieje Kalisza. Poznań: Wydawnictwo Poznańskie, 1977.

• Józef Dobosz, Kazimierz II Sprawiedliwy
• Bronisław Nowacki, Przemysł II
• Jerzy Wyrozumski, Historia Polski do roku 1505