Charles J. Harrison

Charles Joseph Harrison (Born Karl Josef Harrison, December 12, 1824 - October 4, 1926) was an American lawyer, statesman, the 17th president of the United States, serving from 1865 to 1873 and later on a political theorist, philosopher, Marxist theoretician. He is regarded as the forefather of the ideological branch of Marxism known as Federal Socialism.