The Duke of Chester is a title in the British peerage, traditionally associated with the county of Cheshire. It is one of the oldest titles in England, dating back to the 13th century. The title is often held by the eldest son of the reigning monarch, making it a significant part of the British royal family hierarchy. The current Duke of Chester is Prince William, who was granted the title upon the accession of his father, King Charles III. The title is largely ceremonial, with no specific powers or responsibilities, but it carries historical importance and is linked to the rich heritage of the British monarchy.