Born into a Unitarian family in Massachusetts, Storer obtained his M.D. from Harvard Medical School with a specialty in obstetrics and gynecology. He was an early crusader for strong laws to prohibit abortion. He converted to Catholicism in the 1870s, in part because of the influence of his devoutly Catholic wife, Frances, and became an important figure in the local Church in Newport, Rhode Island.
J. Quinn, "The Good Doctor: Horatio Robinson Storer"