mother Margriete Jacobs van den Berch married Jacob Jans de Molijn

Date: 
December 1, 1640

mother Margriete Jacobs van den Berch, widow of Phillips Teunis Leeuwenhoek, and Jacob Jans de Molijn, a city painter and tax officer, registered their betrothal on this date at the Nieuwe Kerk and the Stadhuis. Other couples registered at both churches, and the registers are copies of each other in the same hand. In this case, the registers are not copies. They are in different hands, and they have different marginal notes. I can't read it very well, but the marriage date appears to be December 15.

Document: 

DTB Delft inv. 70, fol. 53v, also DTB inv. 125, fol. 67