William Crawshay II was a prominent Welsh industrialist born in 1801. He became known for his significant contributions to the iron industry during the 19th century, particularly in the Merthyr Tydfil area of Wales. Crawshay took over the family business, Crawshay Ironworks, and expanded it, making it one of the largest ironworks in the region. Under his leadership, Crawshay II played a crucial role in the development of the South Wales iron industry, which was vital to the British economy at the time. He was also involved in local politics and community affairs, helping to shape the industrial landscape of his era.