Charles Grandison Finney (August 29, 1792 – August 16, 1875) was an American Congregationalist/Presbyterian minister and leader in the Second Great Awakening in the United States. He has been called The Father of Modern Revivalism. Finney was best known as an innovative revivalist during the period 1825–1835 in upstate New York and Manhattan, an opponent of Old School Presbyterian theology, an advocate of Christian perfectionism, and a religious writer.