François Robert MUSSARD, nicknamed "Tort Gueule" (crooked face) is a Swiss painter and miniaturist, born in Geneva on June 27, 1713. He is the son of Jean MUSSARD (1681-1754), a member of the Conseil des Deux-Cents and Master silversmith - painter on enamel, husband of Anne Catherine BERJON (1683-1760). He married Lydie PREVOST, a citizen of the Republic of Geneva before settling in 1735, as a miniaturist and painter on enamel, rue de Montmorency in Paris. He worked mainly at the court of Louis XV but also for the other royal courts of Europe. He produced various miniature portraits for the court of Holland, including that of Prince Guillaume V de NASSAU-ORANGE and his elder sister Caroline de NASSAU-ORANGE, as well as the court of Prussia including a portrait of Princess Frédérique Sophie WILHELMINE of Prussia. He died in Paris in 1777. The MUSSARD family is an old French noble family having for coat of arms: Azure with a silver chevron, accompanied in chief by two silver roses and in a point of a golden sun. She fled France for Switzerland after religious persecution against Protestants. By Lydie MUSSARD (1613-1678), wife of Jean ROUSSEAU (1606-1684), Robert MUSSARD is in family with the writer and philosopher Jean-Jacques ROUSSEAU, whom he lived in Paris.