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Duke of Masovia

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Dukes of Masovia in 1450

Duke of Masovia (Polish: Książę Mazowsza) was a title borne by the sons and descendants of the Polish Duke Bolesław III Wrymouth.[1] In accordance with the last will and testament of Bolesław, upon his death his lands were divided into four to five hereditary provinces distributed among his sons, and a royal province of Kraków reserved for the eldest, who was to be High Duke of all Poland. This was known as the fragmentation of Poland. Subsequent developments lead to further splintering of the duchies.

The following is a list of all rulers of the Duchy of Masovia and its parts. Although not all incumbents listed here had titular rights to the title of Duke of Masovia, they are all listed as such for simplicity's sake.

Also take note that some of the dates are merely approximate and the ownership of certain lands might be disputed. Finally, this table does not include lands ruled by dukes of other parts of partitioned Poland or Wenceslaus II and Wenceslaus III.

Dukes of Masovia and Kuyavia

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Partitions of Masovia and Kuyavia under Piast dynasty

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The Duchy went through various border changes in the coming years, sometimes losing and sometimes gaining territory.

      
Duchy of Masovia
(1st creation)
(1138-1275)
      
Duchy of
Łęczyca

(1267-1351)
       Duchy of
Dobrzyń
[2]
(1267-1327)
Duchy of
Kuyavia
[3]
(1247-1333)
Duchy of
Czersk

(1st creation)
(1275-1294)
Duchy of Płock
(1st creation)
(1275-1294)
Duchy of
Gniewkow

(1287-1364)
Duchy of
Inowrocław

(1267-1333)
      
Duchy of
Warsaw

(1st creation)
(1313-1495)
Duchy of
Rawa

(1st creation)
(1313-1355)
       Annexed
to Poland
Annexed
to Poland
Annexed
to Poland

(1355-1370)
       Annexed
to Poland
      
             
Duchy of
Rawa

(2nd creation)
(1426-1459)[4]
Duchy of
Płock

(2nd creation)
(1381-1462)
      
      
Duchy of
Czersk

(2nd creation)
(1471-1495)
       Duchy of
Płock

(3rd creation)
(1471-1495)
Duchy of Masovia
(Czersk line; 2nd creation)
(1495-1526)

Table of rulers

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See also

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References

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  1. ^ "Bolesław III Wrymouth". Geni.com. 11 November 2022.
  2. ^ Dobrzyń was left to Poland, in exchange with Leczyca, which survived as independent a few more years.
  3. ^ The duke of Kuyavia became, 1320, King of Poland, which motivated more exchanges and interventions of the Polish kingdom in the Kuyavian land.
  4. ^ Rawa was annexed to Płock in 1442, but Gostynin, part of Rawa, survived as independent until 1459.
  5. ^ In fact, Casimir was already ruling in parts of Kuyavia since 1233.
  6. ^ Initially ruler of Wyszogród. Also inherited Inowroclaw from his brother, which he exchanged with Poland in return for Sieradz