Jennifer A. Nielsen is an American author known for her work in children's and young adult literature. She has written several popular series, including the Ascendance Trilogy, which features adventure and themes of bravery and friendship. Her books often blend historical elements with engaging storytelling. In addition to her fiction, Nielsen has also written historical fiction and fantasy novels. Her writing has received numerous awards and nominations, making her a prominent figure in contemporary literature for young readers. Nielsen's ability to create relatable characters and thrilling plots has earned her a dedicated readership.