Greater Poland Voivodeship | Czersk, Masovian Voivodeship | Podlaskie Voivodeship | West Pomeranian Voivodeship | Pomeranian Voivodeship | Opole Voivodeship | Lubusz Land | Lower Silesian Voivodeship | Łódź Voivodeship | Kuyavian-Pomeranian Voivodeship | Henryków, Lower Silesian Voivodeship | Srebrna Góra, Lower Silesian Voivodeship | Wojnowo, Lubusz Voivodeship | Silesian Voivodeship | Sandomierz Voivodeship | Nowogródek Voivodeship | Masovian Voivodeship | Białystok Voivodeship | Warmian-Masurian Voivodeship | voivodeship | Poznań Voivodeship (14th century–1793) | Poznań Voivodeship | Lesser Poland Voivodeship | Gródek, Świętokrzyskie Voivodeship | Gawrony, Lower Silesian Voivodeship | Gawronki, Lower Silesian Voivodeship | Dobromierz, Lower Silesian Voivodeship | Bytków, Lower Silesian Voivodeship | Włóki, Masovian Voivodeship | Warblewo, Pomeranian Voivodeship |
His father was Baron Melchior Frederick de Dyhern, a wealthy Lord, who owned considerable land in Lubusz Voivodeship, and his mother was the Countess Helen de Nimptsch.
By conquest the first leaders of the Polans, Mieszko I and especially Boleslaw I added a number of surrounding territories to the newly established core Polish state, and Lebus Land or Lubusz in Lusatia came under Polish rule.
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In the administrative reforms of 1998, the original proposals made no provision for a separate Lubusz voivodeship – Gorzów would have been part of West Pomeranian Voivodeship, Zielona Góra would have been in Lower Silesian Voivodeship (Province of Lebus or Palatinate of Lebus) , and other parts of the region were assigned to Greater Poland Voivodeship.
Osiecko returned to the Republic of Poland after World War II as stipulated by the Allied Potsdam Agreement and the German population was expelled.
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The settlement was first mentioned as Magnum Oszec in a 1312 deed, when the area around Bledzew was temporarily under the rule of the Ascanian margraves of Brandenburg in the west.