William Huskisson: William Huskisson (11 March 1770 – 15 September 1830), was a British statesman, financier, and Member of Parliament for several constituencies, including Liverpool. He was crushed to death by the world's first mechanically powered passenger train (Stephenson's Rocket), at its public opening.
David Douglas: David Douglas (June 25, 1799 – 1834) was a Scottish botanist. Douglas undertook a plant-hunting expedition in the Pacific Northwest in 1824 that ranks among the great botanical explorations of a heroic generation. Douglas died when fell into a pit trap accompanied by a bull. He was gored and possibly crushed.
Matthew Vassar: Matthew Vassar (April 29, 1792–June 23, 1868) was a U.S. (English-born) brewer and merchant. He was the founder and eponym of Vassar College in 1861. He died in mid-speech while delivering his farewell address to the College Board of Trustees.
Allan Pinkerton: Allan Pinkerton (August 25, 1819 – July 1, 1884) was a U.S. detective and spy, best known for creating the Pinkerton Agency, the first detective agency of the United States. He died of gangrene resulting from having bitten his tongue after stumbling on the sidewalk.