Arundel Castle in the context of "Dukes of Norfolk"

Arundel (/ˈærəndəl/ ARR-ən-dəl or locally /ˈɑːndəl/ AHN-dəl) is a market town and civil parish in the Arun District of the South Downs, West Sussex, England.

The much-conserved town has a medieval castle and Roman Catholic cathedral. Arundel has a museum and comes second behind much larger Chichester in its number of listed buildings in West Sussex. The River Arun runs through the eastern side of the town.

Duke of Norfolk is a title in the Peerage of England. The premier non-royal peer, the Duke of Norfolk is additionally the premier duke and earl in the English peerage. The seat of the Duke of Norfolk is Arundel Castle in Sussex, although the title refers to the county of Norfolk. The current duke is Edward Fitzalan-Howard, 18th Duke of Norfolk. The dukes have historically been Catholic, a state of affairs known as recusancy in England.

All past and present dukes have been descended from Edward I. The son of Thomas Howard, 3rd Duke of Norfolk, was Henry Howard, Earl of Surrey; the earl was descended from Edward III. As all subsequent dukes after Thomas Howard, 4th Duke of Norfolk are descendants of the Earl of Surrey, this means they are also descended from Edward III.

Earl of Arundel is a title of nobility in England, and one of the oldest extant in the English peerage. It is currently held by the Duke of Norfolk, and it is used (along with the earldom of Surrey) by his heir apparent as a courtesy title.