The individual known as the "Maid of Orléans" is Joan of Arc. She played a crucial role in the Hundred Years' War by leading French troops to several key victories against the English, most notably at the Siege of Orléans in 1429. Her leadership and divine guidance claims inspired the French forces and were pivotal in revitalizing the French resistance, ultimately leading to the coronation of Charles VII. Joan’s legacy remains significant in both French history and Catholic sainthood.