An illiterate con man from rural New York whose legal run-ins over time involved treasure-hunting, exorcism, being a "disorderly person", commission of banking fraud, polygamy, sexual indiscretion with a 15-year-old girl, and treason against the state of Illinois, Smith's career saw him driven from four states while he attempted to build up a religion based upon a set of golden tablets he would not show anyone, but claimed to have been given by an angel in upstate New York. (To be fair, Smith gathered eleven witnesses long after the translation and publication of the Book of Mormon who claimed to have seen the tablets, but their testimony appears to have been based on spiritual visions of the tablets, not to mention Smith's encouragement.)
On at least two occasions, Smith predicted Jesus' second coming before the end of 1890. On April 14, 1835, he was quoted in "The History of the Church of Jesus Christ of Latter-day Saints" saying, "[T]he coming of the Lord is nigh - even 56 years should wind up the scene." Later, he spoke of a vision in which he was told by God that Christ would return by Smith's 85th year, should he live that long (ie, 1890). Mormon apologists claim these statements, although Smith's, are not among his prophecies per se.
And, as Kitten Week continues at Today's Date in Apocalypse History, here is a picture of particularly grumpy-looking kitten:
