John Alger is excommunicated in 1890 after the Polygamy Manifesto.
D. Michael Quinn’s Yale notes, John Alger, Record of Excommunications, 1832-1899, CR 298/4, Box 1, Fd 3, summarized at Mormon Polygamy Documents
reference that John Alger was excommunicated about 1890 because of his apostasy after the Polygamy manifesto, after which he turned to spiritualism