Simon Cameron, an American senator, born in Lancaster co., Penn., March 8, 1799. He became a printer, and in 1820 the editor of a newspaper at Doylestown. In 1822 he removed to Harrisburg, where he edited a democratic journal, became president of a bank, and subsequently of two railroad companies. In 1845 he was elected United States senator to fill the vacancy caused by the resignation of Mr. Buchanan, his term closing in 1849. He acted with the democratic party, voting in favor of declaring that war existed with Mexico, and in favor of the proposition to extend the Missouri compromise line to the Pacific. After the repeal of the Missouri compromise in 1854 he allied himself with the republican party, and in 1857 was again elected United States senator. In the republican convention held at Chicago in May, 1860, he was proposed as a candidate for the presidency, and on the first ballot received about 50 votes. Mr. Cameron's name was then withdrawn, his friends voting for Mr. Lincoln. On Lincoln's inauguration, March 4, 1861, Mr. Cameron became secretary of war.

He remained in the cabinet till Jan. 14,1862, when he resigned, and was appointed minister to Russia, being succeeded as secretary of war by Mr. Stanton. He retained the mission to Russia only a short time, and returned to America in November, 1862. In 1866 he was again elected to the United States senate, and in 1872 was chosen chairman of the committee on foreign relations, in place of Mr. Sumner. He was reelected as a senator in 1873.