Hitler did so at the meeting of the (nominated, unelected) Reichtag held at Nuremberg in 1935. Please see related question.
Every dictator was unelected. Stalin, Mao
Gerald Ford
He was never unelected he was assassinated by John Wilkes Booth, while in office in 1856
bureaucracy
bureaucracy
Gordon Brown
As the pharaoh is unelected the head of the pentagon or the CEO of a mega corporation.
If is illegal or doesn't concur with the legislative restrictions of the constitution.
Their word was oligarchy. It meant that the upper class acted as an unelected government.
The main criticism that many people have of the UK's democratic system is the monarchy. As a monarchy is unelected, some claim that the UK can never become truly democratic, as the Head of State will never be elected. This is extended to the House of Lords; the Upper Chamber of parliament is also unelected.
War was lost, Gerald Ford was an unelected president, Americans thought our prosperity had ended. :)