There's an interesting complex around the Proto-Indo-European root 'walhaz': https://en.wiktionary.org/wiki/Reconstruction:Proto-Germanic/walhaz https://en.wik

There's an interesting complex around the Proto-Indo-European root 'walhaz': https://en.wiktionary.org/wiki/Reconstruction:Proto-Germanic/walhaz https://en.wiktionary.org/wiki/Reconstruction:Proto-Germanic... From which we get Wales, Cornwall, Gaul, Walloon, and Wallachia. Originally the name of a particular tribe, but came to refer to angry foreign neighbours more generally.