It was temporarily moved to Bologna because of a plague, but soon moved back to its original location.
This council was reconvened by the papal bull "Ad ecclesiae regimen." One of the most influential speakers at this council was Diego Laynez. One theologian drew up a document called Confessio Saxonica to send to this council. This council confirmed the canonicity of the deuterocanonical books, as well as authorizing a revised form of the Index Librorum (*) Prohibitorum and reaffirming the seven sacraments. It was temporarily moved to Bologna because of a plague, but soon moved back to its original location. This meeting, which resulted in the formulation of the Tridentine Mass and the official definition of transubstantiation, was presided over by Julius III and Pius IV, but was convened by Paul III. For 10 points, name this ecumenical council which was called in response to the Protestant Reformation.
This council was reconvened by the papal bull "Ad ecclesiae regimen.
Council of Trent [prompt on 19th Church Council]