This painting is by Joseph van Aken (c. 1699-1749). He was a Flemish artist who spent most of his working life in England. Joseph van Aken was a most successful painter of drapery, costumes and portraits, as well as domestic scenes. He was employed by many established artists to add in the drapery and clothing within their own paintings. It had for many centuries been common practice for busy and successful artists to employ others to paint sections of their paintings, whilst they themselves painted only the key parts such as the faces.
