François Mansart

François Mansart (23 January 1598 – 23 September 1666) was a French architect credited with introducing classicism into Baroque architecture of France. The Encyclopædia Britannica cites him as the most accomplished of 17th-century French architects whose works "are renowned for their high degree of refinement, subtlety, and elegance". Mansart, as he is generally known, made extensive use of a four-sided, double slope gambrel roof punctuated with windows on the steeper lower slope, creating additional habitable space in the garrets that ultimately became named after him—the mansard roof.