I read one years ago, can't remember title or author
Hero was a big name American Footballer, descended from small-time English aristos.
Heroine is granddaughter of recently-deceased small-time English aristo whose estate goes to his distant American cousin, leaving her homeless and penniless.
So far, so perfectly reasonable set-up. Brace yourselves. (I should probably stress that this was set in the latter part of the twentieth century.)
The "map" at the front of the book was a sketchy outline of Britain, titled England, with a blob at the bottom labelled Guildford.
Guildford, when our hero arrives in it, is a picturesque village with a duck-pond on the central green.
Heroine has no discernible skills or friends, because her grandfather, who grudged every penny she cost him, refused to send her to school, relying on the staff to teach her (there may actually have been a dedicated governess at one point).
After hero has persuaded her to marry him (because a small, possibly loaned, allowance while she gets some training would be far too simple) she gets really into watching American Football - which, ok, fair enough; but the sentence that introduces us to this concept is her asking him "what is football?"
(I did finish the book
Spoiler: she turns out to be quite good at analysis of the game and I think the inference was she might get a presenter's post. Who'da thunk it? Oh, and they fall in love.)