Richard Dadd was a painter who dealt with supernatural themes. He always painted with the utmost meticulousness on his works, which often depicted fairies and other fabulous worlds. After a trip in 1842, Dadd increasingly lost his mind. In 1843 he stabbed his father to death because he believed he was the devil. He spent the rest of his life in psychiatric hospitals. Today it is believed that he suffered from schizophrenia and bipolar disorder.