One of my favourite parts of Jack Vance's Lyonesse series, which I first read many years ago, is the way the names seem perfectly chosen to reflect the nature of what they're naming. How could Tantrevalles be anything except a forest, or Tintzin Fyral anything but a castle, or the Teach tac Teach anything but a mountain range? Now I wonder if these names were adapted or inspired from real ones, which would explain how natural they seem.
Did Vance ever speak about the inspiration behind his names? Or is there any information or evidence for where they might have come from? (I'm mostly interested in names, either of places or people, from his Lyonesse trilogy, which is the only Vance fiction I've actually read, but information related to names in his other fantasy could also be interesting if it can be argued to be relevant.)