Simon Greenleaf (December 5, 1783 – October 6, 1853), was an American lawyer and jurist. He was born at Newburyport, Massachusetts before moving to New Gloucester where he was admitted to the Cumberland County bar.
Greenleaf's family traces its ancestry back to Edmund Greenleaf, who lived in Ipswich, Suffolk in England before emigrating and settling in Newburyport, Massachusetts. The Greenleaf family flourished in this part of Massachusetts for almost 150 years prior to Simon's birth in 1783. Simon's father, Moses Greenleaf, married Lydia Parsons, daughter of Rev. Jonathan Parsons of Newburyport. Their son Moses Greenleaf (1777âÂÂ1834), Simon's older brother, became a distinguished surveyor and mapmaker in Maine.
In the 1790s, Simon's parents moved to New Gloucester in Maine, leaving him in Newburyport under the care of his grandfather Jonathan Greenleaf. There Simon was educated at the Latin school and studied the Greco-Roman classics. When he turned 16 years old, he rejoined his parents in New Gloucester. In 1801 he joined the law office of Ezekiel Whitman (later the Chief Justice of Maine) and in 1806 was admitted to the Cumberland County bar as a legal practitioner. On 22 Mar 1806, in New Gloucester, he married Hannah Kingman.
He then opened a legal practice at Standish, but six months later relocated to Gray, where he practised for twelve years, and in 1818 moved to Portland. Greenleaf's political preferences were aligned with the Federalist Party, and in 1816 he was an unsuccessful candidate for that party in Cumberland County for the Senate. He was reporter of the Supreme Court of Maine from 1820 to 1832, and published nine volumes of Reports of Cases in the Supreme Court of Maine (1820âÂÂ1832).
Greenleaf was elected a member of the American Antiquarian Society in 1820.
He was awarded the honorary Doctor of Laws degree by Harvard in 1834. He received the same honor from Amherst in 1845, and again from the University of Alabama in 1852. In 1848, he was elected as a member of the American Philosophical Society.
In 1833, Greenleaf was named to the Royall professorship, and in 1846 succeeded Judge Joseph Story as Dane professor of law at Harvard University. Greenleaf contributed extensively to the development of Harvard Law School, including expansion of the Harvard Law Library. He was retained as chief counsel by the Warren Bridge group in the US Supreme Court case Charles River Bridge v. Warren Bridge 36 U.S. 420 (1837), where the case laid down the rule that public contracts must be construed in favor of states.
In 1848, Greenleaf retired from his active duties, and became professor emeritus. After being for many years president of the Massachusetts Bible Society, he died at Cambridge. Greenleaf's well-known work, a Treatise on the Law of Evidence, is considered a classic of American jurisprudence.
Greenleaf is an important figure in the development of that Christian school of thought known as legal or juridical apologetics. This school of thought is typified by legally trained scholars applying the canons of legal proof and judicial argument to the defense of Christian belief. Greenleaf's Testimony of the Evangelists (1846) set the model for many subsequent works by legal apologists. He is distinguished