For 10 points, name this president and last emperor of France, the nephew of an emperor who lost at Waterloo.
This man's government allowed the establishment of Catholic schools with the Falloux law. He was supported financially by his mistress Harriet Howard after disguising himself as a mason and escaping life imprisonment in the fortress of Ham. This leader secretly signed the Treaty of Villafranca, thus abrogating his promise to aid Piedmontese forces in the Treaty of Plombieres. The streets of this ruler's capital were made harder to barricade by the renovations of Baron Haussmann. This man lost a war that was instigated by the Ems dispatch and that ended with his capture at Sedan. For 10 points, name this president and last emperor of France, the nephew of an emperor who lost at Waterloo.
This man's government allowed the establishment of Catholic schools with the Falloux law.
Napoleon III [or Louis-Napoleon Bonaparte; prompt on "Napoleon"]