Jeanne Marie Bouvier de la Motte Guyon (1648 - 1717)

Jeanne-Marie Bouvier de la Motte-Guyon (commonly known as Madame Guyon) was a French mystic and one of the key advocates of Quietism. Quietism was considered heretical by the Roman Catholic Church, and she was imprisoned from 1695 to 1703 after publishing a book on the topic, A Short and Easy Method of Prayer.