From Greek 'euphemia' meaning 'well-spoken' or 'good repute,' borne by an early Christian martyr.
Euphemia is a name of considerable ancient dignity, assembled from two pillars of the Greek language: *eu*, meaning good or well, and *phēmē*, meaning speech, voice, or reputation. Together they produce a meaning of splendid precision — she of good repute, or one whose words carry grace. It was a name suited to oracles and saints, and indeed it found its most famous early bearer in Saint Euphemia of Chalcedon, a young martyr whose death circa 303 AD during the Diocletianic persecutions made her one of the most celebrated figures of the early Byzantine Church.
The Council of Chalcedon in 451 was held in a basilica built over her tomb. In the British Isles, Euphemia was contracted with characteristic practicality to Effie, and under that guise it flourished in Scotland especially, where it appeared among noble families through the medieval and early modern periods. Effie Gray, the young woman at the center of one of the Victorian era's great public scandals — married first to John Ruskin, then to the painter John Everett Millais — gave the nickname an unexpected notoriety.
The full form Euphemia, however, retained a ceremonial grandeur that Effie never quite claimed. Euphemia today is genuinely rare in the English-speaking world, which is precisely its charm. It belongs to that category of classical names — alongside Sophronia, Araminta, or Thessaly — that feel more like an inheritance from a lost library than a choice from a baby name book. For parents willing to answer questions at the pediatrician's office, it offers unimpeachable ancient roots, a gorgeous sound, and the gentle nickname Effie waiting quietly in reserve.