"Thursday 29 [December].. .His Highness [ Cosimo de' Medici ], after attending Mass, went with Blaeu and Ferroni to look at paintings by various masters, among them the designer Van Velde, Reinbrent [= Rembrandt] the famous painter, Scamus who does seascapes, and others who did not have finished paintings, so that we visited private homes where we could look at their works."