Christine Pullein-Thompson was a British horsewoman and writer born in Wimbledon, London in 1925. She became known for her pony books written for children, drawing on her expertise and passion for horses. Pullein-Thompson came from a literary family with a shared interest in writing for young readers. Her mother, two sisters, and daughter all wrote pony books as well. Together, this family created more than 200 books for children over their collective careers. Christine was particularly prolific, authoring more than 100 of these works. She also used the pen name Christine Keir during her writing career and later became known as Christine Popescu. She died in 2005.