One thing I do know about names in JA - Jane Austen disliked the name Richard, which is why she called the dead Musgrove boy Richard in Persuasion.
"He had, in fact, though his sisters were now doing all they could for him, by calling him 'poor Richard,' been nothing better than a thick-headed, unfeeling, unprofitable Dick Musgrove, who had never done anything to entitle himself to more than the abbreviation of his name, living or dead."
Therefore the prevalence of Richard as the first name of Col Fitzwilliam in JAFF amuses me a bit.
"He had, in fact, though his sisters were now doing all they could for him, by calling him 'poor Richard,' been nothing better than a thick-headed, unfeeling, unprofitable Dick Musgrove, who had never done anything to entitle himself to more than the abbreviation of his name, living or dead."
Therefore the prevalence of Richard as the first name of Col Fitzwilliam in JAFF amuses me a bit.