De Ville examined an enormous number of heads including those of many well-known figures including John Elliotson, Hermann Prince of Pückler-Muskau, Harriet Martineau, Charles Bray, George Eliot, William Blake, Richard Dale Owen, Richard Carlile, the Duke of Wellington and Prince Albert.
Its founder, Thomas Wakley initially supported Elliotson but quickly changed his mind, considering the mesmeric subjects and experiments rather too 'unruly' for his taste.
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In England mesmerism was championed by John Elliotson, Professor of Practical Medicine at University College London and the founder and president of the London Phrenological Society.
His experience of the deception of Okey Sisters’ reputed speaking in tongues with Irving, and his knowledge of their later association with Elliotson and his mesmerism, and their well-attested fraudulent deception of Elliotson, must have strongly informed his later views of the activities of magnetists such as Lafontaine.