The Earl of Mansfield was a title in the British peerage, first created in 1776. The most notable holder of this title was William Murray, who served as Lord Chief Justice of England. He is remembered for his significant contributions to the development of common law and his role in landmark cases, particularly those involving slavery and civil rights. Mansfield's judgments helped shape legal principles that influenced future legislation. His decisions in cases like Somersett's Case were pivotal in the movement against slavery in Britain. The title has since passed through various holders, but his legacy remains prominent in legal history.