John Murray, 5th Duke of Atholl

Declared insane at the age of twenty, he never sat in the House of Lords.

[1] His titles included Duke, Marquess and Earl of Atholl, Marquess and Earl of Tullibardine, Earl of Strathtay and Strathardle, Viscount of Balquhidder, Glenalmond and Glenlyon, Lord Murray of Tullibardine, Lord Gask and Balquhidder, all in the peerage of Scotland; Baron Strange in the peerage of England, and Earl Strange and Baron Murray in the peerage of Great Britain.

[1][2] Lord John Murray was born on 26 June 1778 at Dunkeld, Perthshire, the second son of the 4th Duke by his marriage to the Hon.

[2] The Duke never married and died childless and insane at Greville Place, St John's Wood, London, on 14 September 1846 at the age of sixty-eight after a life of seclusion.

He was succeeded by his nephew George Murray, the son of the Duke's younger brother James Murray, 1st Baron Glenlyon (1782–1837)[2] The baron had managed the family and ducal affairs on behalf of his older brother following their father's death.