Mansard, the name of two French architects, born in Paris—François, who constructed the Bank of France (1598-1666), and Jules Hardoun, his grand-nephew, architect of the dome of the Invalides and of the palace and chapel of Versailles (1645‒1708).
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Mans, Le * Mansel, Henry Longueville