Johann Wilhelm; elector of th. Palatinate(1690-1719); 1658-1719.- "Homage to the Arts - Allegory on the electoral couple of the Palatinae as patrons" (double portr. with his wife Anna Maria Luisa de' Medici in the roundel; 1667-1743).Painting; 1716; by Adriaen van der Werff (1659-1722). Oil on wood; 81.3 x 57.3cm. Inv. no. 260.Munich; Bavarian State Art Collection.