In 1980, Barclay obtained an original copy of Lilly's
Christian Astrology, and later she arranged to have it re-printed as a facsimile edition in 1985. This dissemination of
Christian Astrology helped to spur a revival of interest in traditional astrology in the late 20th century. Her work stimulated the unearthing of techniques that had been lost in various cultural transitions since
the Enlightenment and encouraged wider researches into the astrological traditions of the
Babylonians,
Greeks,
Egyptians,
Persians,
Arabs, Western
medieval and
Renaissance practitioners. As part of her work as a professional astrologer, Barclay taught
horary astrology, and she founded the Qualified Horary Practitioner ("QHP") correspondence course. This consisted of twelve lessons, the last of which required students to make a successful prediction using horary astrology. Several graduates of her course went on to make prominent careers for themselves in the field. Barclay wrote
Horary Astrology Rediscovered (published in 1990), which is a detailed description of the theory, practice and history of horary astrology. The book included material from her correspondence course and in 1991 received the Professional Astrologers Inc. Award for her 'outstanding contribution to astrology'. According to James Holden, in her book, she "advocates the use of Regiomontanus houses, apparently reasoning that if they were good enough for Lilly, they are good enough for 20th century horary astrologers." Barclay's advocacy of Lilly also brought about an elevation of horary astrology (which is the main focus of
Christian Astrology) from obscure occultism to mainstream astrological practice. ==Publications==