"Abel-François Poisson de Vandières, marquis de Marigny and marquis de Menars (1727 – 12 May 1781), often referred to simply as marquis de Marigny, was a ...
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French nobleman who served as the director general of the King's Buildings. He was the brother of King Louis XV's influential mistress Madame de Pompadour." - (Wikipedia (en) 05.01.2021)