I'm such a history-nerd that, with time for research, I could probably enjoy writing in just about any time period.
Louise de Keroualle, being a Frenchwoman from the French court, was feared by most Englishmen for how she might influence their king, and that fear quickly turned to hatred.
Katherine Sedley was the only daughter and heiress to the libertine poet Sir Charles Sedley, and grew into a thoroughly scandalous lady in her own right.