List of British dukedoms: overview, history, and notable examples

Creation and inheritance

The first English dukedom was created in 1337 for the king's son, and the title has been used since the late medieval period to recognise senior members of the royal family and prominent nobles. Most dukedoms are hereditary, passing by male primogeniture unless a special remainder provides otherwise. When a holder dies without eligible heirs a dukedom can become extinct, fall into abeyance, be forfeited through attainder, or merge into the Crown if inherited by the sovereign.

Characteristics and associated rights

• Rank: highest noble title after the monarchy.
• Style: addressed as "His/Her Grace"; wives take the feminine form.
• Subsidiary titles: many dukes possess lower-ranking titles (earldoms, viscountcies) used as courtesy titles by heirs.
• Duchies vs dukedoms: a duchy is an estate or administrative holding (for example the Duchy of Cornwall), distinct from the peerage title itself.

Notable dukedoms and family seats

Examples of well-known non-royal dukedoms include Norfolk (the premier English dukedom, whose holder traditionally serves as Earl Marshal), Devonshire (associated with Chatsworth House), Marlborough (Blenheim Palace), Westminster (the Grosvenor family), Beaufort, Buccleuch, Argyll, Hamilton and Rutland. Many of these families maintain historic country houses and formerly kept grand London townhouses as seasonal residences.

Royal dukedoms and special cases

The royal family traditionally holds or grants dukedoms for princes. Familiar royal titles have included Cambridge, York, Gloucester and Kent; the heir apparent customarily holds the dukedom associated with the heir (for example Cornwall in England and Rothesay in Scotland). Royal dukedoms are often recreated, merged into the Crown, or regranted to new holders over time — see a modern example discussing the title of Duke of Cambridge.

Historical notes and distinctions

Across the centuries some dukedoms have become extinct, been forfeited for political reasons, or incorporated into other peerages. The peerage system itself evolved through English, Scottish and later British creations, so dukedoms may belong to the Peerage of England, Scotland, Great Britain or the United Kingdom. Understanding a particular dukedom typically involves its date of creation, line of succession, subsidiary titles and the family's principal seats.