Hi Michelle!
While I can't answer your questions, I do know that author Sarah Waldock (who used to post her works here in the ANI Board) has extensive knowledge of the Regency era and more.
I found an old message here in the Tea Room where she gave her e-mail, though I don't know if it still works
https://www.dwiggie.com/phorum/read.php?4,128398,128409#msg-128409
She also has a series of blogs, this one dedicated to history
https://sarahs-history-place.blogspot.com/
and this one where she posts a preview of her published works, so it's updated more regularly and if the email doesn't work, you could always leave a comment in one of her posts here
https://mywipwriting.blogspot.com/
She's always been very helpful here whenever someone had a question related to historical trivia.
Good luck, and let us know how it goes!