From a French surname and place name, likely meaning from Evreux.
Devereaux is a name that arrives trailing centuries of Norman aristocracy. It originates as a French surname from the town of Évreux in Normandy — the Latin "Ebroicae," named for the Eburovices, a Belgic Gallic tribe who settled the region before Roman conquest. When the Normans invaded England in 1066, they brought this regional surname with them, and it embedded itself in the English aristocratic record.
The Devereux family became one of the notable English noble houses; most famously, Robert Devereux, the second Earl of Essex, was a favorite of Queen Elizabeth I whose execution in 1601 after a failed rebellion against her made him one of history's most dramatic cautionary tales about the proximity of favor to fatal danger. As a given name rather than a surname, Devereaux is part of a long tradition — especially strong in the American South — of using aristocratic family surnames as first names to honor lineage, claim social connection, or simply to carry the weight and elegance of history into a new generation. The spelling with the terminal "x" (a French orthographic convention marking an unpronounced consonant) gives it an immediately distinctive visual character.
It is a name that looks like it belongs on a legal document or a theater marquee. In contemporary culture, Devereaux has a glamorous, slightly eccentric energy — the name of a charismatic villain in a thriller, or an art collector with impeccable taste. It is rare enough to feel chosen and unusual, but has enough historical grounding that it does not feel invented. Parents drawn to it tend to prize both distinctiveness and deep roots.