The Bobrzanie are one of the

Silesian tribes The Silesian tribes ( pl, plemiona śląskie) is a term used to refer to tribes, or groups of West Slavs that lived in the territories of Silesia in the Early Middle Ages. The territory they lived on became part of Great Moravia in 875 (now mostly i ...

mentioned in the ''

Prague document Prague ( ; cs, Praha ; german: Prag, ; la, Praga) is the capital and largest city in the Czech Republic, and the historical capital of Bohemia. On the Vltava river, Prague is home to about 1.3 million people. The city has a temperate ...

'' from the 11th century AD. The area they inhabited was located on the

Bóbr Bóbr ( cs, Bobr, german: Bober, ) is a river which carries water through the north of the Czech Republic and the southwest of Poland, a left tributary of the Oder. Course The Bóbr has a length of (3 in Czech Republic, 276 in Poland, 10th lo ...

river, from which they took their name.''The Archaeology of Early Medieval Poland''
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References

Silesian tribes {{Europe-ethno-group-stub