Equally alarming was the news which reached Madrid from the other side of the Peninsula. Ever since the days of Philip II. Portugal had formed an integral part of the Spanish monarchy. In December 1640 Portugal renounced its allegiance, and reappeared amongst European States under a sovereign of the House of Braganza. [Sidenote: § 9. Failure of Soissons in France.] Everything prospered in Richelieu's hands. In 1641 a fresh attempt was made by the partizans of Spain to raise France against him. The Count of Soissons, a prince of the blood, placed himself at the head of an imperialist army to attack his native country. He succeeded in defeating the French forces sent to oppose him not far from Sedan. But a chance shot passing through the brain of Soissons made the victory a barren one. His troops, without the support of his name, could not hope to rouse the country against Richelieu. They had become mere invaders, and they were far too few to think of conquering France. [Sidenote: § 10. Richelieu's last days.] Equal success attended the French arms in Germany. In 1641 Guebriant, with his German and Swedish army, defeated the imperialists at Wolfenbüttel, in the north. In 1642 he defeated them again at Kempten, in the south. In the same year Roussillon submitted to France. Nor was Richelieu less fortunate at home. The conspiracy of a young courtier, the last of the efforts of the aristocracy to shake off the heavy rule of the Cardinal, was detected, and expiated on the scaffold. Richelieu did not long survive his latest triumph. He died on December 4, 1642. SECTION V.--_Aims and Character of Richelieu._ [Sidenote: § 1. Richelieu's domestic policy.]