The Earl of Derby is a title in the British peerage, associated with the region of Lancashire. The title was first created in 1485 for Edward Stanley, who played a significant role in the Wars of the Roses. The Earls of Derby have historically been influential in both political and social spheres in England. The current holder of the title is the 19th Earl, Edward Stanley, who succeeded in 2021. The family seat is Knowsley Hall, a historic mansion located near Liverpool. The Earls of Derby have also been known for their involvement in horse racing, particularly the famous Epsom Derby race.