Alexander Duff, 1st Duke of Fife
Alexander William George Duff, 1st Duke of Fife, KG, KT, GCVO, VD, PC , styled Viscount Macduff between 1857 and 1879 and known as The Earl Fife between 1879 and 1889, was a British peer who married Princess Louise, the third child and eldest daughter of King Edward VII of the United Kingdom and Queen Alexandra.
Fife was born in Edinburgh, the son of James Duff and his wife, the former Lady Agnes Hay, second daughter of the 18th Earl of Erroll and the former Lady Elizabeth FitzClarence . When his father succeeded as 5th Earl Fife in 1857, he acquired the courtesy title Viscount Macduff. He attended Eton from 1863 to 1866.
Source: Wikipedia