 Possibly he was a tutor to the nobility or taught at a higher school established by Abraomas Kulvietis in Vilnius.Grand Duke Sigismund I the Old did not support the Reformation and in May 1542 issued an edict on heresy aimed at Kulvietis and other Protestants who could now be tried by the bishop.Many Protestant activists left the Grand Duchy and settled in the Lutheran Duchy of Prussia.