Upon the death of Alexander, 1st Duke of Fife, in January 1912, the peerages created in 1889 (the dukedom of Fife of 1889 and the marquessate of Macduff) and all the older (as previously mentioned) peerages held by the Duff family (the barony of Braco of 1735, viscountcy of Macduff of 1759, earldom Fife of 1759, barony of Skene of 1857, earldom of Fife of 1885) became extinct, while the peerages created in 1900 (the dukedom of Fife of 1900 and the earldom of Macduff) passed to his elder daughter, Princess Alexandra (1891–1959).