Archaic Gutnish
Archaic Gutnish is an Indo-European language spoken in Sweden. Glottolog rates it shifting.
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Old Gutnish was a stage in the development of the North Germanic language Gutnish, spoken on the Baltic island of Gotland and Fårö. The extant body of Old Gutnish is small, and Gutalagen and the Guta saga constitute its majority.
From Wikipedia · Old Gutnish · CC BY-SA 4.0