Edit - I checked the book North and South out of the library and read it a number of years ago. As I recall, it was an entertaining book, but I don't remember specific information about the characters.
Stanley Hazard, Jeffrey Hazard, and Captain Hazard were all given as answers to the first part of the question, but nobody supplied a link to support any of those answers. I am unable to verify that any of those three satisfy the clues given in the question, so those answers have been marked incorrect.