In 1889, the 6th Earl Fife was further created Duke of Fife, in Scotland, and Marquess of Macduff, in the County of Banff, in the Peerage of the United Kingdom, two days after his marriage to Princess Louise of Wales, the eldest daughter of Albert Edward, Prince of Wales (the future King Edward VII).
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The title Earl Fife was created in the Peerage of Ireland by letters patent dated 26 April 1759 for William Duff (1696–1763) after proving his descent from Macduff, Earl of Fife.
Fife | James Earl Jones | Prince Edward, Earl of Wessex | Louis Mountbatten, 1st Earl Mountbatten of Burma | Herbert Kitchener, 1st Earl Kitchener | Earl | Frederick Roberts, 1st Earl Roberts | Earl of Derby | Earl Warren | Earl of Pembroke | Robert Harley, 1st Earl of Oxford and Earl Mortimer | Earl of Warwick | Thomas Wentworth, 1st Earl of Strafford | Edward Smith-Stanley, 14th Earl of Derby | Earl of Shrewsbury | William Pitt, 1st Earl of Chatham | Simon de Montfort, 6th Earl of Leicester | Richard Neville, 16th Earl of Warwick | Earl of Leicester | John Scott, 1st Earl of Eldon | Robert Devereux, 2nd Earl of Essex | Robert, 1st Earl of Gloucester | Edward Harley, 2nd Earl of Oxford and Earl Mortimer | Earl of Devon | Douglas Haig, 1st Earl Haig | My Name Is Earl | Edward Hyde, 1st Earl of Clarendon | Earl Scruggs | Earl of March | Barney Fife |
In 1809 – Alexander Duff succeeded his brother, becoming the 3rd Earl Fife.
He was Member of Parliament for Banffshire from 1727–34, and was created Lord Braco of Kilbryde in the Peerage of Ireland on 28 July 1735, and Earl Fife and Viscount Macduff, also in the peerage of Ireland, by letters patent dated 26 April 1759, after proving his descent from Macduff, Earl of Fife.