Warner was born in Connecticut, where she lived her whole life. Because of poor health, she did not finish school. But she loved to read and write, and she wrote her first book when she was nine years old. When World War I broke out, she was called upon to teach first grade; she continued to teach for thirty-two years.
Gertrude Chandler Warner was born in Putnam, Connecticut, on April 16, 1890, to Edgar and Jane Warner. Her family included a sister, Frances, and a brother, John. From the age of five, she dreamed of becoming an author. She wrote stories for her Grandfather Carpenter, and each Christmas she gave him one of these stories as a gift. Today, Ms. Warner is best remembered as the author of The Boxcar Children Mysteries.