James Stanley, 10th Earl of Derby as 7th Baron Strange and as Lord of Mann. On the death of his brother William in 1746, he succeeded to the Jacobite titles, such as they were. The Duke's two sons both died in infancy. His eldest daughter Lady Charlotte succeeded him in the barony of Strange and the lordship of Mann. Atholl died in 1764 and was succeeded in the dukedom and remaining titles by his nephew, John, the third Duke. He was the eldest son of Lt-Gen Lord George Murray, sixth son of the first Duke (who had been attainted for his participation in the Jacobite Rebellion of 1715), the same year he succeeded the House of Lords decided that he should be allowed to succeed in the titles despite his father's attainder. He married his first cousin, the aforementioned Charlotte Murray, Baroness Strange. They sold their sovereignty over the Isle of Man to the British Crown for £70,000. The Duke and Duchess were both succeeded by their eldest son John, the fourth Duke. In 1786 he was created Baron Murray, of Stanley in the County of Gloucester, and Earl Strange in the Peerage of Great Britain. These titles gave him a seat in the House of Lords. Atholl sold his remaining properties and privileges in the Isle of Man to the British Crown for £409,000. He was succeeded on his death in 1829 by his eldest son, John, the fifth Duke. He had already in 1798 been declared to have been of an "unsound mind". The fifth Duke never married and was succeeded by his nephew, George Murray, 2nd Baron Glenlyon, the eldest son of James Murray, 1st Baron Glenlyon, second son of the fourth Duke, who had been created Baron Glenlyon, of Glenlyon in the County of Perth, in the Peerage of the United Kingdom in 1821. Lord Glenlyon married Lady Emily Frances Percy, daughter of Hugh Percy, 2nd Duke of Northumberland and 3rd Baron Percy. The sixth Duke was succeeded by his only child, John, the seventh Duke. In 1865 he succeeded as sixth Baron Percy through his grandmother aforesaid. The same year he registered the additional surname of Stewart at the Lyon Court. In 1893 he resumed the original spelling of the title, "Atholl" instead of "Athole". He was succeeded by his second but eldest surviving son, John, the eighth Duke, who died childless in 1942 and