From Greek mythology, Elysium is the blissful paradise of the heroic dead.
Elysium comes directly from the heart of Greek mythology, where the Elysian Fields — Elysion in ancient Greek — described the paradise reserved for the heroic and the virtuous after death. Unlike the shadowy realm of Hades that awaited most souls, Elysium was a place of perpetual spring, of light without source, of souls at last free from suffering. Homer describes it in the Odyssey; Hesiod calls it the Isle of the Blessed; Virgil, in the Aeneid, renders it with such beauty that the name became synonymous with perfect happiness in the Latin literary tradition.
Cicero used 'Elysian' as a casual adjective for any ideal place. The word burrowed into English and French as 'Elysian,' giving Paris its grandest boulevard. As a personal name, Elysium is extraordinarily rare — far more common as a place name, a perfume, a hotel, or a film title (the 2013 science fiction film Elysium used it to devastating irony, a paradise for the rich orbiting a ruined Earth).
Its use as a given name is genuinely avant-garde, sitting in the same bold territory as names like Odyssey, Zenith, or Celestia. The choice signals parents who are drawn to mythological grandeur and are unafraid of a name that sounds more like a destination than a person. Yet there is something deeply tender in bestowing such a name on a child: the suggestion that this person is, for their parents, already the Elysian Fields — the best place they have ever arrived.