THE ART

Jean-Baptiste Goyon de Matignon de Seignelay, later Marquess of Seigneley; Catherine-Therese Goyon de Matignon de Seignelay, Marchioness of Seignelay, later Countess of Marsan, of The Counts of Thorigny; and Paul Edouard Goyon de Matignon de Seignelay, later Count of Creully; by Pierre Mignard