Margaret O'Neill

Margaret O'Neill (or O'Neale) Eaton (December 3, 1799 – November 8, 1879), better known as Peggy Eaton, was the wife of John Henry Eaton, a United States Senator from Tennessee and United States Secretary of War, and a confidant of Andrew Jackson. Their marriage was the cause of a national controversy known as the Petticoat Affair.

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