President Chester Alan Arthur in 1882 by Charles Milton Bell

Chester Alan Arthur (October 5, 1829 – November 18, 1886) was an American politician who served as the 21st President of the United States. Arthur was a member of the Republican Party and worked as a lawyer before becoming the 20th vice president under James Garfield. While Garfield was mortally wounded by Charles J. Guiteau on July 2, 1881, he did not die until September 19, at which time Arthur was sworn in as president, serving until March 4, 1885.

Before entering elected politics, Arthur was a member of the Stalwart faction of the Republican Party and a political protégé of Roscoe Conkling, rising to Collector of Customs for the Port of New York, a position to which he was appointed by President Ulysses S. Grant. He was then removed by the succeeding president, Rutherford B. Hayes, in an effort to reform the patronage system in New York.