Roald Dahl sisters. Dahl always maintained that his mother and her stories had a strong influence on his writing. In one interview, he mentioned: "She was a great teller of tales. Her memory was prodigious and nothing that ever happened to her in her life was forgotten." When Dahl started writing and publishing his famous books for children, he created a grandmother character in "The Witches" and later stated that she was based directly on his own mother as a tribute. In 1961, Dahl hosted and wrote for a science fiction and horror television anthology series called "Way Out", which preceded the
Roald Dahl Theo Dahl was severely injured when his baby carriage was struck by a taxicab in New York City. For a time, he suffered from hydrocephalus. As a result, his father became involved in the development of what became known as the "Wade-Dahl-Till" (or WDT) valve, a device to alleviate the condition. The valve was a collaboration between Dahl, hydraulic engineer Stanley Wade, and London's Great Ormond Street Hospital neurosurgeon Kenneth Till, and was used successfully on almost 3,000 children around the world. In November 1962, Dahl's daughter Olivia died of measles encephalitis, age seven. Her death left Dahl "limp with