Charles Guiteau, a frustrated office-seeker, assassinated James Abram Garfield, the twentieth president of the United States in 1881.
After the assassination of Garfield, Chester Alan Arthur served from 1881 as the twenty-first president of the United States.
After Abraham Lincoln, someone killed him. After that of William Henry Harrison, his term ranks as the second shortest in history. From 4 March 1881, he held office for a total of just six months and fifteen days until his death.
https://en.wikipedia.org/wiki/James_A...