[2]: 189 East Germanic was presumably native to the north of Central Europe, especially modern Poland, and likely even the first branch to split off from Proto-Germanic in the first millennium BC.

For many years, the least controversial theory of the origin of the Germanic (and East Germanic) languages was the so-called Gotho-Nordic hypothesis: that they originated in the Nordic Bronze Age of Southern Scandinavia and along the coast of the northernmost parts of Germany.

[5] By the 1st century AD, the writings of Pomponius Mela, Pliny the Elder, and Tacitus indicate a division of Germanic-speaking peoples into large groupings with shared ancestry and culture.

[6] In fact, the Scandinavian influence on Pomerania and today's northern Poland from c. 1300–1100 BC (Nordic Bronze Age sub-period III) onwards was so considerable that this region is sometimes included in the Nordic Bronze Age culture.

[citation needed] Frederik Hartmann argues that East Germanic is not a valid genetic clade, as the three most attested languages conventionally identified as east Germanic (Burgundian, Vandalic, Gothic) do not share any common innovations with each other and all independently split from Proto-Germanic.