Focus on Boy with a Glass and a Lute and explore the Name.
In his 1910 catalog of Frans Hals works Hofstede de Groot wrote:82. THE LAUGHING MANDOLINE-PLAYER. M. 214. A young man with long dishevelled hair sits holding up in his right hand a glass full of wine, at which he looks with a smile. His dark costume is trimmed with blue; his cap hangs on the back of his head, to the left. With his left hand he holds up one end of a mandoline, the other end of which rests on a table. Signed on the right with the monogram; panel, 36 inches by 30 inches.
Exhibited at the Royal Academy Winter Exhibition, London, 1891, No. 72.
Hals' positioning of a figure looking upwards was common to many of his genre paintings of the 1620s:			
			
		
		
			
			
		
		
			
			
		
This painting is probably related to The Fingernail Test:
Hofstede de Groot genre Frans Hals London The Fingernail Test