Marquess of Carisbrooke

Arms of Alexander Mountbatten

The title of Marquess of Carisbrooke was created in the Peerage of the United Kingdom in 1917 for Prince Alexander of Battenberg, eldest son of Princess Beatrice of the United Kingdom (youngest daughter of Queen Victoria) and Prince Henry of Battenberg. Along with other German-surnamed relations of the British royal family, Alexander also changed his surname at this time, to Mountbatten. The title became extinct upon the 1st Marquess's death in 1960, as he did not produce a male heir.

The Marquess held the subsidiary titles Earl of Berkhampsted and Viscount Launceston, in the County of Cornwall.

Carisbrooke Castle was the residence of Prince Henry and Princess Beatrice as Governor of the Isle of Wight. The title of Marquess of Berkhampstead had previously been conferred with the Dukedom of Cumberland on Prince William Augustus, son of King George II, in 1726. The title of Viscount Launceston had previously been conferred with the Dukedom of Edinburgh on Prince Frederick Lewis, later Prince of Wales, also in 1726.

Marquesses of Carisbrooke (1917)

• Alexander Mountbatten, 1st Marquess of Carisbrooke (1886–1960)