It is assumed that Burgundians, Goths and Gepids with parts of the Rugians left Pomerania during the late Roman Age, and that during the migration period, remnants of Rugians, Vistula Veneti, Vidivarii and other, Germanic tribes remained and formed units that were later Slavicized. The Vidivarii themselves are described by Jordanes in his Getica as a melting pot of tribes who in the mid-6th century lived at the lower Vistula.Andrew H. Merrills, History and Geography in Late Antiquity, Cambridge University Press, 2005, p.325, Mayke De Jong, Frans Theuws, Carine van Rhijn, Topographies of Power in the Early Middle Ages, BRILL, 2001, p.524, Though differing from the earlier Willenberg culture, some traditions were continued. One hypothesis, based on the sudden appearance of large amounts of Roman solidi and migrations of other groups after the breakdown of the Hun empire in 453, suggest a partial re-migration of earlier emigrants to their former northern homelands.
