The dukedom and the Earldom of Kendal became extinct. There is currently no heir apparent to the earldom, viscountcy, or barony. The viscountcy is used as the courtesy title by the heir apparent to the earldom. His eldest son Albert succeeded in the earldom. The former earl demands they swear an oath to work to regain the earldom. From his father William inherited the Earldom of Northumbria. The courtesy title used by an heir apparent to the earldom is "Lord Leslie". The Earldom of Cumberland, created in 1525, became extinct in 1643. His successor in the earldom was his son, Henry. William deprived Ralph of all his lands including his earldom. The earldom of Northumbria was the successor of the earldom of Bamburgh. Carrick was a Gaelic Earldom in Southern Scotland. They had two sons who both succeeded to the earldom. Boleyn's claims to the Earldom of Wiltshire also depended upon his Irish relatives. The title Prince of Wales is nowadays always conferred along with the Earldom of Chester.