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
Subsidiary title Lord Maltravers. Subsidiary title A subsidiary title is an hereditary title held by a royal or a noble but which is not regularly used to identify that person, due to their concurrent holding of a greater title. For example, the Duke of Norfolk is also the Earl of Arundel, the Earl of Surrey, the Earl of Norfolk, the Baron Beaumont, the Baron Maltravers, the Baron FitzAlan, the Baron Clun, the Baron Oswaldestre, and the Baron Howard of Glossop. In day-to-day practice, the individual who holds all of these titles would be referred to only by his most senior title –