Who is Adonais?

Adonias is the title of Percy Bysshe Shelley's poem written in honor of the death of his rival, the young poet, John Keats. Within the poem, Adonais is the persona of the late Keats.
The name is derived from Adonis, who is the human lover of the goddess Aphrodite in Greek myth. In Shelley's pastoral elegy for Keats, mourners are summoned to "weep for Adonais—he is dead!" The poem moves towards consolation, however, and ultimately offers solace in the thought that Adonais, having woken up from the dream that is life on earth, is now truly alive. In the end, the Earth appears as a sphere of shadows and worms, whereas the world into which Adonais has been absorbed is one of eternal unity and light. Adonais becomes a transcendent figure who is representative of the human spirit as it is absorbed into nature, as much as a figure of Keats.