Name The Year: Louis I (the Great), king of Hungary (1342-82), Poland (1370-82)?

Questions

there is a statue of what us president in london's trafalgar square??

what was the stage name of singer annie may bullock??

who was the number one dj at station wil st louis in 1958??

on saturday night live, what planet did the coneheads come from??

what r&b singing group was the first to use violins on a record??