The christening of Ernst August in the summer of 1914 was the last great gathering of European monarchs before the start of World War I. He had an illustrious list of godparents: George V of the United Kingdom, Franz Joseph I of Austria, Nicholas II of Russia, Ludwig III of Bavaria, Frederick Francis IV, Grand Duke of Mecklenburg-Schwerin, Prince Adalbert of Prussia, Prince Oskar of Prussia, Prince Maximilian of Baden, the 1st Royal Bavarian Heavy Cavalry Regiment, and all four of his grandparents: the German Emperor and Empress and the Duke and Duchess of Cumberland.