Earl of Buchan of his wife. In 1617 they were created by Royal charter Earl and Countess of Buchan, with remainder to the heirs male of the marriage, whom failing, to the legitimate and nearest heirs-male and assignees of the Earl. In 1633 the precedence of the earldom was established by Act of Parliament as 1469. This line of the family failed on the death of their grandson, the eighth Earl, who died unmarried in 1695. The title passed by the terms of the 1617 charter to the heirs male of the 6th Earl i.e. to the heirs male of his younger brother
Earl of Airth I, as Graham's claim descends from Robert II's second - undoubted - marriage. Graham had successfully petitioned for the return of the title of Earl of Strathearn which the first Graham Earl of Mentieth had held. Before he was invested, however, Graham boasted that his blood was "bluer than the King's". He was sacked from his positions and instead of receiving the Earldom of Strathearn, he was given the insultingly minor title of Earl of Airth. On the death of the 2nd Earl of Airth the earldom became dormant. In 1834 Capt Robert Barclay Allardice of Ury and Allardice petitioned