American Unitarian clergyman and author, born in Boston, MA, on the 8th of August 1814. He graduated at Harvard, and became, in 1840, pastor of the Harvard Unitarian Church, Charlestown, MA, remaining there until 1869; was professor of systematic theology in Harvard Divinity School in 1857–63; was at one time editor of the Christian Register, and later of the Christian Examiner. In 1887 he became president of the Massachusetts Historical Society. He was the author of many works, principally of a biographical or historical nature; among them, A Half Century of the Unitarian Controversy (1857) and The Puritan Age and Rule in the Colony of the Massachusetts Bay, 1629–85 (1888). He died on the 21st of December 1894.