A pseudonym used by Edith Pargeter.

Edith Mary Pargeter, OBE, BEM was a prolific author of works in many categories, especially history and historical fiction, and was also honoured for her translations of Czech classics; she is probably best known for her murder mysteries, both historical and modern. Born in the village of Horsehay (Shropshire, England), she had Welsh ancestry, and many of her short stories and books (both fictional and non-fictional) were set in Wales and its borderlands.

During World War II, she worked in an administrative role in the Women's Royal Naval Service, and received the British Empire Medal - BEM.

Pargeter wrote under a number of pseudonyms; it was under the name Ellis Peters that she wrote the highly popular series of Brother Cadfael medieval mysteries, many of which were made into films for television.