(1665 - September 26, 1722) was a Dutch Golden Age painter. He assisted his older brother, Adriaen van der Werff.
He learned to paint from his brother Adriaen and according to the RKD, he spent most of his life working in Rotterdam, where he painted the rich and famous
Carl III. Philipp (1666 - 1742), Pfalzgraf bei Rhein zu Neuburg, seit 1716 Kurfurst von der Pfalz
Medium oil on canvas