The Duke of Cornwall is a title traditionally held by the eldest son of the reigning monarch of the United Kingdom. Established in 1337, the title comes with various responsibilities, including managing the Duchy of Cornwall, a significant portfolio of land and assets that generates income for the duke. The current Duke of Cornwall is Prince William, who became the titleholder following the accession of his father, King Charles III, to the throne. The title is not only a mark of nobility but also plays a crucial role in supporting the public and charitable activities associated with the royal family.