month later on 7 February 1764, the House of Lords deemed John as the rightful heir to his uncle's title (notwithstanding the attainder of his father) and he succeeded him as 3rd Duke of Atholl, whereupon Charlotte became Duchess of Atholl. She inherited the sovereignty of the Isle of Man from her father on his death but sold it to the British Crown in 1765 for £70,000 and an annuity of £2,000 per year. The duchess died on her 74th birthday in 1805 at Barochey House, near Glasgow, and was buried at Dunkeld. References 1731 births 1805 deaths Hereditary women peers Daughters of British dukes Charlotte Place of birth missing Burials in Scotland 18th-century Scottish people 19th-century Scottish people 18th-century Scottish women 19th-century Scottish women People of Byzantine descent Monarchs of the Isle of Man Barons Strange British duchesses by marriage