Rosemary Sutcliff could not read until she was ten or eleven years old. Certainly aged nine she saw no point!
My mother in her own splendidly unorthodox fashion, taught me at home, chiefly by reading to me. King Arthur and Robin Hood, myths and legends of the classical world, The Wind in the Willows, The Tailor of Gloucester, Treasure Island, Nicholas Nickleby, Kim, Puck of Pook’s Hill, and Little Women, all at more or less the same time. The result was that at the age of nine I was happily at home with a rich and somewhat indigestible stir about of literature, but was not yet able to read to myself. Why, after all, read to yourself when you can get somebody else to read to you?
Source: Donald R. Gallo (1990) Speaking for Ourselves: Autobiographical Sketches by Notable Authors of Books for Young Adults. National Council of Teachers of English.