Gutnish
Gutnish (US: GOOT-nish), or rarely Gutnic (Swedish: gutniska or gutamål), is a North Germanic language spoken sporadically on the islands of Gotland and Fårö. The different dialects of Gutnish, while stemming from the Old Gutnish (Swedish: Forngutniska) variety of Old Norse, are sometimes considered part of modern Swedish.