Sophie de Marbois-Lebrun, Duchess of Plaisance

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Sophie de Marbois-Lebrun, Duchess of Plaisance (Greek: Δούκισσα της Πλακεντίας) (1785–1854) was a French noblewoman, known as an important figure in Greek high society the first decades after Greek independence. She was born in Philadelphia, Pennsylvania, where her father, François Barbé-Marbois, was serving as French Consul-General in the United States.