Magna veritas: or, John Gadbury, (student in physick and astrology) not a Papist, but a true Protestant of the Church of England

This polemical work defends the astrologer John Gadbury’s Protestant loyalty while situating his astrological practice within a contested religious and political landscape. Its historical interest lies in the overlap of astrology, confessional identity, and public argument in early modern England, and readers will find apologetic writing alongside references to astrological judgment.

John Gadbury (1627–1704) was an English astrologer and almanac-maker whose writings helped sustain astrological and predictive literature in seventeenth-century England. He is notable for blending practical astrology with broader claims about cosmology, politics, and providence.