Louis de Rouvroy (16 January 1675 – 2 March 1755) commonly known as Saint-Simon was a French soldier, diplomatist and writer of memoirs, was born in Paris (Hôtel Selvois, 6 rue Taranne, today at 175 Bd.

Saint-Germain).

The dukedom-peerage granted to his father, Claude de Rouvroy (1608–1693), is a central fact in his history.