Also Romansh: Source: "Vornamen in der Schweiz. Prénoms en Suisse. I nomi in Svizzera. Prenoms in Svizra" (1993) published by the Association of Swiss registrars https://nossaistorgia.ch/entries/EjnD042lDBg
Severin was a name used by my ancestors who came from Alsace-Lorain France, back when the region was in German hands. My ancestors' passport said they were French but they spoke German. Members of 6 generations of our family proudly bore/bear this name. Funny, we always thought the name was French because of St Severin (the hermit and namesake of a less famous church walking distance from NotreDame in Paris). How interesting to see the name is actually Germanic! We pronounce it "SEV' er in" but I know in France they are more likely to pronounce it se ver OHN' with the ohn coming from the back of the throat and the ver barely sounding (indeed it sounds almost like se vrOHN' when pronounced by a Francophone friend of mine). Many people today mispronounce it SEV' urn. I think it's laziness... after all a three syllable name is so much work.
Source: "Vornamen in der Schweiz. Prénoms en Suisse. I nomi in Svizzera. Prenoms in Svizra" (1993) published by the Association of Swiss registrars
https://nossaistorgia.ch/entries/EjnD042lDBg