author
Best known for the charming children's fantasy Peggy's Giant, this early 20th-century writer left behind a small but memorable footprint in juvenile fiction. Little biographical information is easy to confirm today, which gives the work an extra air of mystery.

by Mary D. Maitland Kelly
Mary D. Maitland Kelly is credited as the author of Peggy's Giant, a children's novel that is now in the public domain and available through Project Gutenberg. The story's playful mix of wishes, giants, and imaginative adventure suggests a writer with a warm feel for fantasy and for the inner world of children.
Project Gutenberg also lists Hillyard, M. D. as an alias connected with her name. Beyond that, reliable biographical details appear to be scarce in readily available sources, so it is safest to focus on the surviving work itself rather than make uncertain claims about her life or career.
For modern readers, Kelly remains an intriguing literary figure: an author known less through a long public record than through the atmosphere of one whimsical book that has managed to endure.