Magdaleentje Maertens Leeuwenhoek
They lived in C0908bis, now Markt 71, which he owned.
After 23 years of marriage, Magdaleentje Maertens died 1720/04/08 and Barent died 1720/05/11, within a month of each other. They were living on the Turfmarkt. It was the second marriage for both of them.
Thanks to Jos Brakel for his research help.