This man's government introduced an act that made 
This man's government introduced an act that made divorce independent from the Anglican Church with the Divorce and Matrimonial Causes Act, and he was inspired by the assassination attempt of Felice Orsini to pass the Conspiracy to Murder Bill.  While serving as Foreign Secretary he gained fame for supporting a British national against the Greek government in the Don Pacifico affair, with the Royal Navy's bombardment of Athens becoming known as his "gunboat diplomacy".  Succeeding the Earl of Aberdeen as Prime Minister, his first ministry witnessed both the Second Opium War and the suppression of the Sepoy Mutiny.  For ten points, identify this British Prime Minister whose first term also saw the end of the Crimean War.
This man's government introduced an act that made divorce independent from the Anglican Church with the Divorce and Matrimonial Causes Act, and he was inspired by the assassination attempt of Felice Orsini to pass the Conspiracy to Murder Bill.  
Henry John Temple, 3rd Viscount Palmerston [accept either underlined part, accept Lord Palmerston]