Zephaniah Platt (Michigan Attorney General)

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Zephaniah Platt (March 31, 1796 in Pleasant Valley, Dutchess County, New York – April 20, 1871 in Aiken, Aiken County, South Carolina) was an American lawyer and politician from Michigan. He was Michigan Attorney General from 1841 to 1843.


He was the son of New York Supreme Court Justice Jonas Platt and Helena (Livingston) Platt (1767-1859), and was baptized at the Presbyterian Church in Pleasant Valley, N.Y. On September 30, 1818, he married Cornelia Jenkins (d. 1890), and they had seven children.

He removed to the Michigan Territory and practiced law at Jackson, Michigan. He was Attorney General of the State of Michigan from 1841 to 1843.

He attended the 1842 Ojibwe treaty negotiations with the "Lake Superior Chippewa" at LaPointe and signed the treaty as a witness. Subsequently Platt acted as representative for some of the American Fur Company's Ojibwe traders seeking recompense for past Indian debts.

After the end of the American Civil War, he removed to South Carolina, and was Judge of the 2nd Circuit Court from 1868 until his death.

He was a grandson of Zephaniah Platt, and a nephew of Charles Z. Platt and of John Henry Livingston.


Legal offices
Preceded by
Peter Morey
Michigan Attorney General
Succeeded by
Elon Farnsworth