Painter, engraver, and designer Etienne de Lavallée-Poussin was a student of Jean-Baptiste Descamps (1715-1791) at the Académie des Arts du Dessin in Rouen before 1755, and later studied with Jean-Baptiste Marie Pierre (1713-1789) in Paris. He was the winner of the Prix de Rome in 1759

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Etienne de Lavallée-Poussin is also known as Etienne de, and Poussin.

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<ref name=CH>{{cite web |url=https://collection.cooperhewitt.org/people/18042393/ |title=Etienne de Lavallée-Poussin |author=Cooper Hewitt, Smithsonian Design Museum |accessdate=21 November 2018 |publisher=Smithsonian Institution}}</ref>