Madeleine L'Engle (; November 29, 1918 – September 6, 2007) was an American writer of fiction, non-fiction, poetry, and young adult fiction, including A Wrinkle in Time and its sequels: A Wind in the Door, A Swiftly Tilting Planet, Many Waters, and An Acceptable Time. Her works reflect both her Christian faith and her strong interest in modern science.
Madeleine L'Engle Camp was born in New York City on November 29, 1918, and named after her great-grandmother, Madeleine Margaret L'Engle, otherwise known as Mado. Her maternal grandfather was Florida banker Bion Barnett, co-founder of Barnett Bank in Jacksonville, Florida. Her mother, a pianist, was also named Madeleine: Madeleine Hall Barnett. Her father, Charles Wadsworth Camp, was a writer, critic, and foreign correspondent who, according to his daughter, suffered lung damage from mustard gas during World War I.