Saint Alexander Nevsky was a 13th-century Russian prince and military leader known for his defense of the Kievan Rus against foreign invaders. He is celebrated for his victory over the Swedish and Teutonic Knights in key battles, particularly the Battle of the Neva in 1240 and the Battle on the Ice in 1242. His leadership helped to preserve Russian territories during a time of great turmoil. After his death in 1263, Alexander was canonized by the Russian Orthodox Church for his piety and dedication to the faith. He is regarded as a national hero in Russia, symbolizing unity and strength. His legacy continues to influence Russian culture and history.