John Campbell Hamilton-Gordon, 1st Marquess of Aberdeen and Temair KT GCMG GCVO PC (3 August 1847 – 7 March 1934), known as The Earl of Aberdeen from 1870 to 1916, was a Scottish politician. Born in Edinburgh, Hamilton-Gordon held office in several countries, serving twice as Lord Lieutenant of Ireland (1886; 1905–1915) and serving from 1893 to 1898 as the seventh Governor General of Canada.
Aberdeen was born in Edinburgh to George Hamilton-Gordon, 5th Earl of Aberdeen and his wife, Mary Baillie, daughter of George Baillie and sister to George Baillie-Hamilton, 10th Earl of Haddington. He studied at the University of St Andrews and University College, Oxford. He succeeded as 7th Earl of Aberdeen following the death of his eldest brother, George, 6th Earl of Aberdeen.
In 1877 he married Ishbel Maria Marjoribanks, daughter to Dudley Marjoribanks, later 1st Baron Tweedmouth, and Isabella Weir-Hogg. It seems that their marriage was a love match as they were long time friends and Ishbel developed a crush on Hamilton-Gordon at just 14. Lady Aberdeen was an LL.D. of Queen's University, Kingston, Ontario. She served as President of the International Council of Women from 1893–99, and later founded the National Council of Women of Canada and the Victorian Order of Nurses.