Lady Carnavan, who lives in Highclere, discovered that fact while poking around a 150-year old book in the castle’s library.
She says three names struck and after a bit of research discovered that one of them was John A. Macdonald, Canada’s first Prime Minister, and a guest at the Castle while he and others drafted the British North American Act.
Canada’s High Commissioner to the UK, Janet Charette, says the news came a surprise to her and she’s looking forward to spreading the word.
Highclere Castle is open to the public for tours 65 days a year.
Downton Abbey airs on our sister station Vison TV.