Where does “Norwegia” come from?

Norwegia (English) comes from Old English Norweġ, from Old Norse Norðvegr, from Old Norse norðr, from Proto-Germanic nurþrą, from Proto-Germanic nurþraz, from Proto-Indo-European *nér — below the surface, below.

Ancestry of “Norwegia”, step by step

StepLanguageWordMeaning
1Old EnglishNorweġ—
2Old NorseNorðvegr—
3Old Norsenorðrnorth; north, northward
4Proto-Germanicnurþrąnorth, northern; north, northward
5Proto-Germanicnurþraznorth, northern
6Proto-Indo-European*nérbelow the surface, below
Every word from Proto-Indo-European *nér →Every word from Proto-Germanic nurþraz →Every word from Proto-Germanic nurþrą →