The name of the main location in this book series is based on that of a hill town in Umbria (3,10,2,6)

I believe the answer is:

the chronicles of narnia

I've seen this clue in The Sunday Times and The Times.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.