that all the locations in the book are inspired by areas
around where she lives, and that the whole 'slightly
off-the-wall felling of the place comes from living in
The Peninsula at the South-West tip of England is the former Celtic nation (and now county of) Cornwall.
It's southerly location and the fact that it's on the path of the Gulf Stream gives it a mild climate which, combined with its endless beaches, makes it a favorite destination for British holiday makers (the resident population is about half a million, but around 4 million visit each year).
The last native Cornish speaker is believed to have died in 1891, but some of the language lives on in the dialect of local people.
Dictionary of Cornish dialect.