The remnants of a force crushed by this man's general, the Duke of Gaeta, formed the Papal Zouave corps in the wake of the Battle of Castelfidardo, which allowed the passage of the Law of Guarantees. France pledged support to this figure in the Treaty of Plombieres and allied with him in a series of battles that prompted the Treaty of Zurich. This man's service at Novara under his father Charles Albert helped earn him a respectful armistice during negotiations with the victor of that battle, Joseph Radetzky. Though his 
The remnants of a force crushed by this man's general, the Duke of Gaeta, formed the Papal Zouave corps in the wake of the Battle of Castelfidardo, which allowed the passage of the Law of Guarantees. France pledged support to this figure in the Treaty of Plombieres and allied with him in a series of battles that prompted the Treaty of Zurich. This man's service at Novara under his father Charles Albert helped earn him a respectful armistice during negotiations with the victor of that battle, Joseph Radetzky. Though his forces won at Magenta and Solferino, this man's kingdom gained only Lombardy after allying with Napoleon III. His greatest achievement took advantage of Austria's military struggles, and the groundwork for it was laid by Mazzini and the Carbonari, and Garibaldi's Expedition of the Thousand. For 10 points, identify this foe of Pius IX and predecessor of Umberto I, a Savoy ruler of Piedmont who carried out the Risorgimento to unite Italy.
The remnants of a force crushed by this man's general, the Duke of Gaeta, formed the Papal Zouave corps in the wake of the Battle of Castelfidardo, which allowed the passage of the Law of Guarantees.
Victor Emmanuel II or Vittorio Emanuele II