Frans —, Dutch painter (4)

I believe the answer is:

hals

(Other definitions for hals that I've seen before include "Frans --, Dutch artist" , "Sixteenth to seventeenth century Dutch artist known for portraits" , "Laughing Cavalier artist" , "portrait painter" , "Painter of The Laughing Cavalier, d. 1666" .)

I've seen this clue in The Times.

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