author
A little-known 19th-century writer and physician, remembered for a strikingly unusual book that blends Christian belief with astronomical speculation. The surviving record points to a single, curious work that imagines heaven within the sun and turns theology into cosmic argument.

by D. Mortimore
Very little biographical information about this author could be confirmed from reliable online sources. Public-domain library records and the text of the book itself identify the writer as D. Mortimore, M.D., and show that The Spirit of God as Fire; the Globe Within the Sun Our Heaven was published in New York in 1870.
That book is what keeps the name in circulation today. It presents a bold mix of religious interpretation and late-19th-century interest in astronomy, arguing for a vivid, imaginative vision of the divine and the afterlife. Even without a fuller life story, the work stands out for its confidence, originality, and willingness to connect science and faith in unexpected ways.
Because so little else could be verified, it is safest to think of D. Mortimore as an obscure American medical doctor and religious speculative writer whose reputation rests almost entirely on this one unusual title.