Moncure Daniel Conway (1832–1907), the son of a Virginian plantation-owner, became a Unitarian minister but his anti-slavery views made him controversial. He later became a freethinker, and following the outbreak of the Civil War, which deeply divided his own family, he left the United States for England in 1863. He gained a reputation for being the ‘least orthodox preacher in London’, and was acquainted with many figures in the literary and scientific world, including Charles Dickens and Charles Darwin.