Earl of Airth Privileges heard evidence in support of the opposing claims in 1870 and 1871, but came to no decision, and the three Earldoms remained dormant. On 29 April 2011, Queen Elizabeth II conferred the title of Earl of Strathearn on Prince William of Wales. As a result, on marriage his wife Catherine became Countess of Strathearn. He generally uses this title in Scotland. Earl of Airth Earl of Airth was a title in the Peerage of Scotland, created on 21 January 1633 by Charles I, for William Graham, 7th Earl of Menteith. It became extinct on the death of his grandson
Earl of Leicester The properties associated with the earldom became part of what was later called the Duchy of Lancaster. In 1564 the earldom was again created for Queen Elizabeth I's favourite, Robert Dudley. Since Dudley died without heirs, the title became extinct at his death. The title was again created in 1618 for Robert Sidney, his nephew. Along with the earldom Robert Sidney was granted the subsidiary title of Viscount Lisle on 4 May 1605. The Sidneys retained the titles until the death of the seventh Earl in 1743, when the titles again became extinct. The title of earl was then recreated