Focus on Marriage Portrait of Isaac Massa and Beatrix van der Laen and discuss the Name.
In his 1910 catalog of Frans Hals works Hofstede de Groot wrote:427. A MARRIED COUPLE. B. 15; M. 90. In a garden a gentleman sits in the left foreground smiling at the spectator. His right hand is at his breast; his left hand is pressed to his side. He has a moustache and a small pointed beard. He wears a broad-brimmed black 
felt hat, a black silk costume with a lace collar and fine linen wristbands. Beside him to the right sits a woman, bending slightly forward, with her head turned three-quarters left. She smiles rather slyly at the spectator. Her right hand rests on the man's left shoulder; her left hand is in her lap. She wears a black dress under a dark-purple gown, a ruff, a white cap threaded with a pink ribbon, and lace-trimmed wristbands. Behind the couple are trees. To the right is a park with merry-making couples, a building, a fountain, and a statue. It was wrongly supposed to represent Frans Hals and his wife. Canvas, 58 inches by 67 1/2 inches. Sales. J. Six, Amsterdam, April 6, 1702 (bought in). H. Six van Hillegom, Amsterdam, November 25, 1851, No. 15. In the Rijksmuseum, Amsterdam, 1907 catalogue, No. 1084.
Amsterdam J. Six Hofstede de Groot Frans Hals Rijksmuseum