Euphemia Elphinstone (also written Euphame or Eupheme; born 11 May 1509) was a mistress of James V of Scotland and the mother of his son Robert Stewart, 1st Earl of Orkney, born in 1532, as well as another child who died in childhood. One of her sons with her husband John Bruce was Laurence Bruce of Cultmalindie (1547–1617), the builder of Muness Castle.
Euphemia married John Bruce of Cultmalindie (c. 1507 – March 1547), and had five children: Laurence Bruce, Robert Bruce (born c. 1536), Henry Bruce (born c. 1538), James Bruce (born c. 1540) and Euphamie Bruce (born c. 1542). There is no firm evidence for any death date.
Her children and descendants were significant in the history of the Shetland Islands and Orkney Islands. Laurence Bruce and Robert Stewart and their families were to become closely entwined in the Shetland Islands, of which Laurence Bruce was appointed Sheriff by his half-brother.
According to legend, many people in the Shetland Islands are descended from her; in particular, those named Bruce are supposed to be descended from her children by John Bruce.
- Robertson, Joseph, Inventaires de la Royne d'Ecosse (Bannatyne Club, 1863), p. xxxviii.
- William Fraser, Elphinstone Family Book, vol. 1 (Edinburgh, 1897), pp. 2, 38-9, 50, 69-71.
- "John Bruce of Cultmalindie". geni_family_tree.
- "Euphemia Elphinstone: Biography on Undiscovered Scotland". www.undiscoveredscotland.co.uk.
- Clark, John, Genealogy, Records and Intermarriages of the Fordyce, Bruce & Clark Families at Uyeasound, Unst, Shetland, 2nd ed. (Falkirk, 1902).