Oil/canvas, 46 x 36 cm, on the reverse fragments of collectors seals, min. rest., relined. - Portrait a. miniature painter, trained in the Netherlands, circa 1765 he painted portraits for the residence castle in Rudolstadt, thereafter he worked in Utrecht a. Lille, in 1772 he became court painter in Weimar a. curator of the Grand ducal gallery, in 1779 he was court painter of the daughters of Louis XV, he continued to move frequently between France a. Germany, his portraits captivate by their delicate psychological charakterisation a. the sophisticated rendering of different materials. - Mus.: Paris (Louvre), Orléans, Versaille, Weimar, Rudolstadt. a. others. - Lit.: Thieme-Becker, Bénézit a. others.