Louis de Rouvroy, duc de Saint-Simon, French soldier and diplomat (died 1755)

Louis de Rouvroy, duc de Saint-Simon, GE, was a French courtier and memoirist, who also spent time as a soldier and diplomat. He was born in Paris at the Hôtel Selvois, 6 rue Taranne. The family's ducal peerage (duché-pairie), granted in 1635 to his father Claude de Rouvroy (1608–1693), served as both perspective and theme in Saint-Simon's life and writings. He was the second and last Duke of Saint-Simon.