Goplans

The Goplans or Goplanes (Latin: Glopeani, Polish: Goplanie) was an early West Slavic tribe that inhabited the central parts of the Kuyavia (Kujawy) region, with their probable seat at Kruszwica.^[1] They might have been named after the Lake Gopło; Kmietowicz believes the Bavarian Geographer (845) overheard it and recorded it (as Glopeani).^[2] Many remnants of small strongholds have been unearthed around the lake.^[2] The tribe was absorbed by the Polans in the 10th century.

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The medieval chronicle claims that Glopeani controlled 400 gords (fortified wooden settlements), as if the tribe was dominant in the area; however, the archeological research in Kruszwica has failed to uncover the fortress, although it does indicate the presence of a large settlement. A possible resolution has been offered by Gerard Labuda who hypothesized that the "Goplanie" were the same as, or a part of, the Polans, whose main center was located at Gniezno.^{[citation needed]}

The chronicle doesn't indicate the location of the tribe; however, it can be inferred from the list of neighboring tribes and their known locations: #14 Osterabtrezi (identified as Eastern Obodrites), #15 Miloxi, #16 Phesnuzi, #17 Thadesi, #18 Glopeani, #19 Zuireani, #20 Busani (identified as Buzhans on the Bug river). The position on the list suggest the Glopeani tribe might have lived in Pomerania, Great Poland or Masovia.^{[citation needed]}

• List of medieval Slavic tribes

• Kmietowicz, Frank A. (1976). Ancient Slavs. Worzalla Publishing Company.