Claes Corstiaensz. Becomes Master Claes, Musician
From 1611 onwards, Claes Corstiaensz. is referred to as Master Claes, musician, in notarial documents. He leaves behind six musical instruments for his son Dirck, including a lute, trombone, shawn, viols, and a cornet, which were likely inherited from Claes and played by the family.