Jeannette Walls is the daughter of Rex and Rose Mary Walls. Her father, Rex, was a charismatic but troubled man who struggled with alcoholism, while her mother, Rose Mary, was an artist and writer who often prioritized her creative pursuits over practical responsibilities. The family lived a nomadic lifestyle, moving frequently and facing financial instability. Jeannette has three siblings: Lori, Brian, and Maureen. They shared a close bond despite their challenging upbringing, often relying on each other for support. The family's experiences are detailed in Jeannette's memoir, The Glass Castle, which highlights their resilience and complex dynamics.