De Brancas is the name of an old French noble family of Neapolitan origin, namely from the Brancaccio family, whose members occupied many important positions in the history of France.
Notable members
André de Brancas (d.1595), Admiral of France
Jean-Baptiste de Brancas (1693-1770), French bishop
Louis, Marquis of Brancas and Prince of Nisaro, also known as "Louis-Henri de Brancas-Forcalquier" and "Louis de Brancas de Forcalquier de Céreste" (1672-1750), Marshal of France Henri-Ignace de Brancas, Bishop of Lisieux 1714–1760, brother of the above Louis Louis-Léon de Brancas (1733-1824), 3rd duc de Lauraguais, 6th duc de Villars, French author Nicola de Brancas, Bishop of Marseille 1445-1466 Marie Françoise de Brancas (d.1715), wife of Alphonse Henri, Count of Harcourt, rebuilt the Château d'Harcourt Duc de Brancas, any of a number of hereditary office-holders under the Ancien Régime of France