I recently finished Bristol Diamonds, by Emma Marshall, and Hannah More is one of the minor characters. I didn't know anything about her until I read her Wikipedia article, but she sounds fascinating. She was in the same generation of Bluestockings as Frances Burney, who coincidentally wrote the other historical novel featuring the Hot Well that I've read: Evelina.
Anyway. As I was looking her up, I discovered that I'd missed a plaque when I wandered down Windsor Terrace: she used to live at number 4. Lovely window treatment, too, perhaps to stop nosey people like me staring in while we're taking snaps of the plaque.
GPS Coordinates:
51.45132, -2.62464
Location: Hotwells