The czar and Louis XVI, among countless others, put up quite a fight before going.
Set the machine to 1783, and there would be Louis XVI of France himself, pushing for admission to the Metsu show.
The last king of France before the French Revolution; the husband of Marie Antoinette. He at first accepted a change from absolute monarchy (see ancien régime) to constitutional monarchy in France. Then he tried to flee the country and was brought back a prisoner. Radicals, including the Jacobins, assumed control of the revolution and had Louis and Marie Antoinette beheaded for treason.