He came to the papal throne in an era following the sack of Rome in 1527 and rife with uncertainties in the Catholic Church following the Protestant Reformation. His pontificate initiated the Counter-Reformation with the Council of Trent in 1545, as well as the Wars of religion with Emperor Charles V's military campaigns against the Protestants in Germany. He recognized new Catholic religious orders and societies such as the Jesuits, the Barnabites, and the Congregation of the Oratory. His efforts were distracted by nepotism to advance the power and fortunes of his family, including his illegitimate son Pier Luigi Farnese.