More on Lizzie Fry (1780-1845) She formed an association for the improvement of (women's) prison conditions in 1817, and worked with her brother Joseph Gurney on a report on prison conditions and reform (1819), which had a great influence. Elizabeth's maiden name was Gurney, but she married into the Fry (chocolate manufacturers) family. Incidentally, the other great chocolate manufacturing family, the Cadburys, were also Quakers and also from the North. Both families were opposed to slavery, and they married into each other. Eventually their companies merged, Cadbury's becoming the dominant business. I don't know about their descendants, but at least one of them was in a major 70s rock band.