In his recent paper on Late Proto-Indo-European migrations, when citing Udolph to support his model, Frederik Kortlandt failed to mention that the Old European hydrotoponymy in northern Central-East Europe evolved into Baltic and Slavic layers, and both take part in some Northern European (i.e. Germanic – Balto-Slavic) commonalities.
From Expansion slavischer Stämme aus namenkundlicher und bodenkundlicher sicht, by Udolph, Onomastica (2016), translated into English (emphasis mine):
NOTE. An archived version is available here. The DOI references for Onomastica do not work.
(…) there is a clear center of Slavic names in the area north of the
… Read the rest “European hydrotoponymy (IV): tug of war between Balto-Slavic and West Uralic”
The study of hydrotoponymy shows a prevalent initial Old European layer in central and northern Germany, too, similar to the case in Iberia, France, Italy, and the British Isles.
The recent paper on Late Proto-Indo-European migrations by Frederik Kortlandt relies precisely on this ancestral layer as described by Jürgen Udolph to support a Danubian expansion of North-West Indo-European with East Bell Beakers, identified as the Alteuropäische (Old European) layer that was succeeded by Germanic in the North European Plain.
The Proto-Germanic homeland
The following are excerpts are translated from the German original (emphasis mine) in Udolph’s Namenkundliche Studien … Read the rest “European hydrotoponymy (III): from Old European to Palaeo-Germanic and the Nordwestblock”