Where did terry deary get his writing ideas from?

Terry Deary, the author of the popular "Horrible Histories" series, draws his writing ideas from a deep interest in history, particularly its more gruesome and humorous aspects. He often researched lesser-known historical events and figures, aiming to make history accessible and entertaining for children. Deary's background as a teacher also influenced his desire to engage young readers through captivating storytelling and humor.