The relationship between Isabella and Martinuzzi was tense. Martinuzzi continued to control state administration and finance even after the Diet confirmed Isabella's superior position in February 1543. The first tribute from John Sigismund's realm was sent to the Ottoman Sultan in June. In the same month, Saxon clergymen from Kronstadt (now Brașov in Romania), who had adopted Lutheranism, participated in a debate with Catholic priests in the presence of the queen and Martinuzzi in Gyulafehérvár. The Saxons were allowed to leave, although Martinuzzi, who was bishop of Várad, wanted to bring them before court on charges of heresy. In April 1544, the Diet of Torda prescribed that travellers should respect the religious customs of the settlements they visited, showing that the ideas of the Reformation had spread to the whole province.