So my work in progress, The Duke Who Never Forgets, is set in Derbyshire. I've been looking up some locally appropriate surnames - did you know you could do that? There's a website, here, that gathers lists of English surnames by county, often dating them back to their earliest appearance in records. Very handy for a romance author striving for authenticity and local flavor. There are a lot of fantastic names to choose from, some glorious and crunchy like Widgery and Kippax, some that have a perfect traditional feel that can't just be invented, like Orme or Harrop.
And some names that are too fantastic and silly to be believed - like Topliss or Toogood, Hickinbotham or Luckcuck. Luckcuck! And let's not forget the inevitable Longstaff, but have you ever met anyone named Lillycrapp before? Or Purseglove? Spendlove, Makepeace - there's a sentence in there, I think.