Not much to say about the above except for the obvious, that Radnorshire isn't in England and that the "fine old stronghold" was built just 90 years or so before the Land Army girls moved in.
On the other hand you come across comments like this from a book called Language in Geographic Context:
"the border counties of Brecon and Radnor, which have long been anglicised since Tudor times"
Now I wouldn't mind if this was penned by purveyors of crockery but it's in a tome authored by two of the leading authorities on the geographical history of the Welsh language and it's nonsense.
I could go on ........ but I've given up blogging so I won't