Due to the high volume of output in such a short period of time under the Kenyon name, speculations abound whether Kenyon was one author or if this was a pseudonym for more than one writer, a common practice of using house pseudonyms in adventure fiction at that time. Some authors have said that Paul Kenyon was indeed a "house" name used by a book packager Lyle Kenyon Engel, of Book Creations, Inc. However, Donald Moffitt admitted that he was the sole author of the eight published Baroness novels.