Where does “Grisões” come from?

Grisões (Portuguese) comes from French Grisons, from French gris, from Old Occitan gris, from Frankish grīs, from Proto-Germanic grīsaz — grey; terrible; frightening.

Ancestry of “Grisões”, step by step

StepLanguageWordMeaning
1FrenchGrisons—
2Frenchgrisgrey, gray; drunk, tipsy; gray
3Old Occitangris—
4Frankishgrīsgrey
5Proto-Germanicgrīsazgrey; terrible; frightening
Every word from Proto-Germanic grīsaz →Every word from Frankish grīs →Every word from Old Occitan gris →