IIRC Tolkein, after the fact, worked out what Numenor's (a "fallen" kingdom and an Atlantis lore analogue) name would be in elf-language and despite having different rootwords it came to "Atalante"
Y'all. Seriously.
Hardly anyone even understands the unbelievable depth of Tolkien's linguistic genius. If ever there was an artist just straight up making jokes that only he would ever get, omg. So get this, it's epic.
You know the "Brandywine River" in Lord of the Rings?