Frans —, artist whose works include 1624's The Laughing Cavalier (4)
I believe the answer is:
hals
(Other definitions for hals that I've seen before include "Frans --, Dutch artist" , "portrait painter" , "Frans - , Dutch painter (The Laughing Cavalier)" , "Laughing Cavalier artist" , "Painter of The Laughing Cavalier, d. 1666" .)