Harriet Collins Boinville, of Bracknell. Mrs. Boinville was a member of a radical social circle in England in the early 19th century that included the Godwins and the Shelleys. She was greatly admired by Shelley, and he appeared at one point to have been in love with her daughter Cornelia. Mrs. Boinville's brother-in-law was John Frank Newton, who wrote the vegetarian tract The Return to Nature (1811).
From the guide to the Harriet Collins Boinville manuscript material : 1 item, 1814, (The New York Public Library. Carl H. Pforzheimer Collection of Shelley and His Circle.)