 Often, the title "President of the Council", a shortened version of the official style, was also employed.The written Constitution of the Brazilian Empire did not require the Emperor to appoint a prime minister; nor did it provide for a parliamentary system of government, instead vesting the Executive authority in the Emperor himself, and stipulating that the Emperor was to be aided by ministers that he was free to appoint and dismiss.However, Emperor Pedro II decided to appoint a president of the Council among his ministers, to lead the workings of the Government.