In the late Middle Ages, a shift took place from sculpted masks to true death masks, made of wax or plaster. These masks were not interred with the deceased. Instead, they were used in funeral ceremonies and were later kept in libraries, museums, and universities. Death masks were taken not only of deceased royalty and nobility (Henry VIII, Sforza), but also of eminent persons—composers, dramaturges, military and political leaders, philosophers, poets, and scientists, such as Dante Alighieri, Ludwig van Beethoven, Napoleon Bonaparte (whose death mask was taken on the island of Saint Helena), Filippo Brunelleschi, Frédéric Chopin, Oliver Cromwell (whose death mask is preserved at Warwick Castle), Joseph Haydn, John Keats, Franz Liszt, Blaise Pascal, Nikola Tesla (commissioned by his friend Hugo Gernsback and now displayed in the Nikola Tesla Museum), Torquato Tasso, and Voltaire. As in ancient Rome, death masks were often subsequently used in making marble sculpture portraits, busts, or engravings of the deceased.