William Bayne, Dictionary of National Biography… (1890)
“ GORDON, Lord LEWIS (d. 1754) , Jacobite, was the third son of Alexander, second duke of Gordon [q. v.] , and Lady Henrietta Mordaunt, daughter of Charles, earl of Peterborough and Monmouth. He was for some time a lieutenant in the navy, but on the outbreak of the rebellion of 1745 he joined the cause of the Stuarts. On 16 Oct. 1745 he swore allegiance to Prince Charles Edward at Holyrood, representing, it was believed, his brother, Cosmo George, third duke of Gordon. Lord Lewis formed one of the prince's council instituted at Edinburgh. ”
