William Stanier was a prominent British locomotive engineer known for his work with the London, Midland and Scottish Railway (LMS). Born in 1876, he played a significant role in the development of steam locomotives during the early 20th century. His designs, particularly the Stanier Class 5, became famous for their efficiency and reliability. Stanier's engineering career included the introduction of several successful locomotive classes, which greatly improved railway services in the UK. He was also known for his innovative approaches to locomotive design, which influenced future generations of engineers. Stanier passed away in 1965, leaving a lasting legacy in railway history.