Surprise, friends!

[newredshoes]

I bet you thought you'd seen the last of me. I have a question for you, fellow Shakespeare nerds. I'm writing this AU set during Henry IV Part II, and part of the AU (bear with me, it's not what you think) is that the Prince of Wales has married before he becomes king.

Any idea how King Henry (or anyone else, for that matter) would address his daughter-in-law, particularly in a casual way? I've heard/wondered about Lady Wales, Lady Monmouth and Lady Bolingbroke, but last names and titles have always been kind of confusing for me in the histories, so any help or insight (or link-sharing, if you think you know someone who might have an answer) would be most appreciated.