John Taylor recounts the martyrdom of Joseph and Hyrum Smith on June 27, 1844.
Doctrine and Covenants, 1844 ed, section CXI, 444, The Joseph Smith Papers website, accessed August 11, 2021
To seal the testimony of this book and the Book of Mormon, we close with the martyrdom of Joseph Smith the prophet and Hyrum Smith the patriarch. They were shot in Carthage jail on the 27th of June, 1844, about 5 o’clock P. M., by an armed mob, painted black—of from 150 to 200 persons. Hyrum was shot first and fell calmly exclaiming “I am a dead man!” Joseph leaped from the window, and was shot dead in the attempt, exclaiming “O Lord my God!”—They were both shot after they were dead in a brutal manner, and both received four balls.