Jewish Encyclopedia Volume 3 p638 states:

MODEL, MARX: Court Jew to Margrave William Frederick of Brandenburg-Ansbach (1703-1723) From 1691 Model and his family were exempt from the payment of duties on the goods which they imported, and in the same year were given the privilege of printing the Talmud. The margrave protected him by several decrees, and ordered the authorities to take the necessary measures to collect debts due to him "so that Model may surely be able to help us."