He was the son of Alexander Seton, Lord Gordon (d. 1440) (2nd son of Sir William Seton of that Ilk), by his spouse Elizabeth Gordon (d. 16 March 1439), daughter and heiress of Sir Adam Gordon of that Ilk.
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Alexander Seton, 1st Earl of Huntly (died 15 July 1470) at some point he began using his mother's family family name of Gordon, possibly when he succeeded his father as Lord Gordon.
Hugh Lindsay (1765–1844), married Jane Duff-Gordon, daughter of Hon. Alexander Gordon, Lord Rockville,and had issue.
Alexander Gordon, 4th Duke of Gordon, was allegedly instrumental in the passing of this legislation.
Lord Aberdeen's second wife also died giving birth to their last child and so he then married Lady Anne Gordon (a daughter of the 2nd Duke of Gordon) and they had six children,
Alexander the Great | Gordon Brown | Alexander Pope | Alexander | Alexander Graham Bell | Flash Gordon | Alexander Calder | Alexander Pushkin | Alexander von Humboldt | Alexander I of Russia | Alexander II of Russia | Alexander Hamilton | Gordon Lightfoot | Alexander McQueen | Dexter Gordon | Alexander II | Gordon Banks | Pope Alexander III | Jason Alexander | Charles George Gordon | Alexander I | Alexander Korda | Mike Gordon | Gordon Highlanders | Alexander McCall Smith | Pope Alexander VI | Alexander von Humboldt Foundation | Alexander III of Russia | Alexander Alekhine | Alexander Mackenzie |
The remainder are all British Army officers and include Colonel Sir William Howe de Lacy (the Quartermaster-General of the British Army), Colonel Edward Stables and Lieutenant-Colonel William Henry Milnes (both 1st Foot Guards), and Lieutenant-Colonel Sir Alexander Gordon (3rd Foot Guards).
Gordon was the son of the 2nd Duke of Gordon and was named after his father's close, Jacobite friend, Cosimo III de' Medici, Grand Duke of Tuscany.
Eventually the commission fell to the lesser-known Edinburgh architect, John Baxter, who rebuilt it in 1769 for Alexander Gordon, 4th Duke of Gordon.