Abraham-Louis Breguet, who lived from 1747 to 1823, is considered one of the greatest watchmakers of all time. Kings, queens, and emperors from all over the world, including Marie Antoinette, Napoleon Bonaparte, and the Queen of Naples, commissioned timepiece creations from A.-L. Breguet. Aside from incredible aesthetics and artistry, A.-L. Breguet was also notable for his bevy of timekeeping innovations and inventions—many of which are still used in modern watchmaking.