The earldom of Arran currently exists in two forms within the Scottish nobility, in reference to the Isle of Arran. One is a peerage title in the Peerage of Scotland, held as a subsidiary title by the Duke of Hamilton.
The other is a baronage title in the Baronage of Scotland attached to the Lochranza Castle, which was auctioned off in the 1990s along with the ruins of the Castle. It is currently held by Susan Clark Livingston, Countess of Arran.[1][2]