William George Robb ( 1872 - 1940 ) was a British painter. William George Robb s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 138.59 USD for A MOONLIT SCENE WITH SHEPHERD AND FLOCK in 2004 to 1449.69 USD for THE PICNIC; THE MOONLIGHT SONATA in 2006 , based on the size and medium of the artwork.