They could sell their goods wholesale and retail, and could not be taxed or assessed higher than the Christians. Jews were sometimes assigned the role of local tax collectors. The Holy Roman Emperors from the House of Habsburg kept a considerable number of court Jews. Among those of Emperor Ferdinand II are mentioned the following: Solomon and Ber Mayer, who furnished for the wedding of the emperor and Eleonora of Mantua the cloth for four squadrons of cavalry; Joseph Pincherle of Görz; Moses and Joseph Marburger (Morpurgo) of Gradisca; Ventura Pariente of Trieste; the physician Elijah Chalfon of Vienna; Samuel zum Drachen, Samuel zum Straussen, and Samuel zum Weissen Drachen of Frankfurt am Main; and Mordecai Meisel, of Prague. A specially favored court Jew was Jacob Bassevi, the first Jew to be ennobled, with the title ""von Treuenberg"". Important as court Jews were also Samuel Oppenheimer, who went from Heidelberg to Vienna, and Samson Wertheimer (Wertheimher) from Worms. Oppenheimer, who was appointed chief court factor, together with his two sons Emanuel and Wolf, and Wertheimer, who was at first associated with him, devoted their time and talents to the service of Austria and the House of Habsburg: during the Rhenish, French, Turkish, and Spanish wars they loaned millions of florins for provisions, munitions, etc. Wertheimer, who, by title at least, was also chief court factor to the electors of Mainz, the Electorate of the Palatinate, and Treves, received from the emperor a chain of honor with his miniature. Samson Wertheimer was succeeded as court factor by his son Wolf. Contemporaneous with him was Leffmann Behrends, of Hanover, court factor and agent of the elector Ernest Augustus and of the duke Rudolf August of Brunswick. He also had relationships with several other rulers and high dignitaries. Behrends' two sons, Mordecai Gumpel and Isaac, received the same titles as he, chief court factors and agents. Isaac Cohen's father-in-law, Behrend Lehman, called also "Bärmann Halberstadt", was a court factor of Saxony, with the title of ""Resident""; and his son Lehman Behrend was called to Dresden as court factor by King Augustus the Strong.