In France in 1852, voters were asked whether they approved of the re-establishment of the Empire in the person of Louis Napoléon Bonaparte,  the only president of what republic?
Napoleon III Louis-Napoléon Bonaparte (born Charles-Louis Napoléon Bonaparte; 20 April 1808 – 9 January 1873) was the President of France from 1848 to 1852 and, as Napoleon III, the Emperor of the French from 1852 to 1870. He was the only president of the French Second Republic and the head of the Second French Empire.
Retour des cendres The retour des cendres ("return of the ashes") was the return of the mortal remains of Napoleon I of France from the island of St Helena to France and their burial in the Hôtel des Invalides in Paris in 1840, on the initiative of Adolphe Thiers and King Louis-Philippe.