[Lachwen]

I've always been entranced by references to Gondolin as "the City of Seven Names." Did Tolkien actually list those names anywhere? Or are they one of those things that, unfortunately, Tolkien didn't live long enough to record? (forgive me if there's already a thread on this, but I was reading Of Tuor's Coming to Gondolin in the Unfinished Tales again, and I started wondering...)