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Margaret "Peggy" Shippen (July 11, 1760 – August 24, 1804) was the highest-paid spy in the American Revolution, and was the second wife of General Benedict Arnold.
Shippen was born into a prominent Philadelphia family with Loyalist tendencies. She met Arnold during his tenure as military commander of the city following the British withdrawal in 1778. They were married in the Shippen townhouse on Fourth Street on April 8, 1779, and Arnold began conspiring with the British to change sides soon after. Peggy played a role in the conspiracy which was exposed after British Major John André was arrested in September 1780 carrying documents concerning the planned surrender of the critical Continental Army base at West Point.
Arnold escaped to New York City and Peggy followed. They traveled together to London at the end of 1781, where she established a home and Arnold rebuilt a trading business. In 1787, she joined him in Saint John, New Brunswick, where his difficulties with local businessmen forced them to return to London in December 1791. Arnold died in 1801, after which she had to settle his business affairs and pay off his debts. She died in 1804, having borne five children who survived infancy.
