Tacitus mentions the people Fenni in Germania (46), and this people lived somewhere near modern Finland. I am interested in the etymology of this word.
Do we know where Tacitus got the word Fennus? Is this a first appearance, or does it have written predecessors? Is the word believed to have been borrowed from some other language? If yes, do we know which one?
The origin of the English word Finn is also unclear, and it is not at all clear to me if it is related to Tacitus' word. The Finnish word for Finland or Finns is unrelated, but also of unclear meaning or origin.