Yes, J.R.R. Tolkien, the author of The Lord of the Rings, was a professor of linguistics and created many fictional languages for the people in Middle-earth, his legendary world. These fictional languages, including Elvish, Dwarvish, and Black Speech, were inspired by real-life languages such as Finnish, Welsh, and Latin. Tolkien spent many years building the linguistic and cultural backgrounds for each of the races in Middle-earth and his attention to detail helped make Middle-earth feel like a rich, living world to his readers.
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