District duchy

The district duchy, also known as the district principality, was a type of the state under the patrimonial system, such as duchy or principality, formed in the feudal system, as a result of land partition between the members of a royal family. It occurred in the Middle Ages and early modern period, notably in Europe, in states such as the Holy Roman Empire, Duchy of Poland, and Kievan Rus'.

Bavaria

 * Bavaria-Ingolstadt
 * Bavaria-Landshut
 * Bavaria-Munich
 * Bavaria-Straubing

Mecklenburg

 * Mecklenburg-Güstrow
 * Mecklenburg-Schwerin
 * Mecklenburg-Stargard
 * Mecklenburg-Strelitz

Palatinate

 * Palatinate-Birkenfeld
 * Palatinate-Birkenfeld-Bischweiler
 * Palatinate-Birkenfeld-Gelnhausen
 * Palatinate-Birkenfeld-Zweibrücken
 * Palatinate-Kleeburg
 * Palatinate-Landsberg
 * Palatinate-Lautern
 * Palatinate-Mosbach
 * Palatinate-Mosbach-Neumarkt
 * Palatinate-Neuburg
 * Palatinate-Neumarkt
 * Palatinate-Simmern
 * Palatinate-Simmern and Zweibrücken
 * Palatinate-Simmern-Kaiserslautern
 * Palatinate-Simmern-Sponheim
 * Palatinate-Sulzbach
 * Palatinate-Sulzbach-Hilpoltstein
 * Palatinate-Zweibrücken
 * Palatinate-Zweibrücken-Birkenfeld
 * Palatinate-Zweibrücken-Vohenstrauss-Parkstein

Pomerania

 * Pomerania-Demmin
 * Pomerania-Stettin
 * Pomerania-Schlawe
 * Pomerania-Wolgast
 * Pomerania-Stolp
 * Pomerania-Neustettin
 * Pomerania-Stargard
 * Pomerania-Barth
 * Pomerania-Rügenwalde
 * Pomerania-Wolgast-Stolp

Saxony and Thuringia

 * Saxe-Altenburg
 * Saxe-Coburg
 * Saxe-Coburg-Eisenach
 * Saxe-Coburg-Saalfeld
 * Saxe-Eisenberg
 * Saxe-Coburg-Gotha
 * Saxe-Eisenach
 * Saxe-Gotha
 * Saxe-Gotha-Altenburg
 * Saxe-Hildburghausen
 * Saxe-Jena
 * Saxe-Marksuhl
 * Saxe-Meiningen
 * Saxe-Römhild
 * Saxe-Saalfeld
 * Saxe-Weimar
 * Saxe-Weimar-Eisenach

Original division

 * Seniorate Province (later reformed into the Duchy of Kraków)
 * Duchy of Greater Poland
 * Duchy of Sandomierz
 * Duchy of Masovia
 * Duchy of Silesia

Greater Poland

 * Duchy of Poznań
 * Duchy of Gniezno
 * Duchy of Kalisz

Sandomierz

 * Duchy of Wiślica

Masovia

 * Duchy of Czersk
 * Duchy of Płock
 * Duchy of Warsaw
 * Duchy of Rawa
 * Duchy of Belz
 * Duchy of Wizna

Kuyavia

 * Duchy of Łęczyca
 * Duchy of Sieradz
 * Duchy of Brześć Kujawski
 * Duchy of Inowrocław
 * Duchy of Bydgoszcz and Wyszogród
 * Duchy of Gniewkowo
 * Duchy of Dobrzyń

Pomerelia

 * Duchy of Gdańsk
 * Duchy of Świecie and Lubiszewo
 * Duchy of Białogarda
 * Duchy of Lubiszewo
 * Duchy of Świecie