Earl of Arundel is the oldest extant earldom and the oldest extant peerage in the Peerage of England. It is currently held by the Duke of Norfolk, and is used (along with the Earldom of Surrey) by his heir apparent as a courtesy title. It was created in 1138, for the Norman baron Sir William d'Aubigny. Until the mid-13th century, the earls were also frequently known as Earl of Sussex, until this title fell into disuse. At about the same time, the earldom fell to the originally Breton FitzAlan Family, a younger branch of which went on to become the Stuart Family, which later ruled Scotland.