Col. William H. Dame, the ranking officer in southern Utah who ordered the Mountain Meadows massacre, received a patriarchal blessing in 1854 that he would "be called to act at the head of a portion of thy Brethren and of the Lamanites (Native Americans) in the redemption of Zion and the avenging of the blood of the prophets upon them that dwell on the earth". See Patriarchal blessing of William H. Dame, February 20, 1854, in Harold W. Pease, "The Life and Works of William Horne Dame", M.A. thesis, BYU, 1971, pp. 64–66. In June 1857, Philip Klingensmith, another participant, was similarly blessed that he would participate in "avenging the blood of Brother Joseph". See Patriarchal blessing of Philip Klingensmith, Anna Jean Backus, Mountain Meadows Witness: The Life and Times of Bishop Philip Klingensmith (Spokane: Arthur H. Clark Co., 1995), pp. 118, 124; Salt Lake Cutoff and the California Trail; Spanish Trail Cut a Roundabout Path Through Utah; Scott 1877.
http://en.wikipedia.org/wiki/Mountain_Meadows_massacre