Henry Deringer was a renowned gun maker in the early to mid-19th century. He is most famously known for his guns with the name "Derringer," which became popular for their small size and reliable performance in self-defense scenarios. Deringer guns were designed to be easily concealable and were often carried by law enforcement officials and civilians alike. They were often made with high-quality materials and were finely crafted, making them popular with collectors as well. Deringer's legacy continues to live on today, with many gun enthusiasts still seeking out his firearms for their historical value and craftsmanship.