Adona s: An Elegy on the Death of John Keats, Author of Endymion, Hyperion, etc. also spelled Adonaies, is a pastoral elegy written by Percy Bysshe Shelley for John Keats in 1821, and widely regarded as one of Shelley's best and most well-known works. The poem, which is in 495 lines in 55 Spenserian stanzas, was composed in the spring of 1821 immediately after 11 April, when Shelley heard of Keats' death (seven weeks earlier). It is a pastoral elegy, in the English tradition of John Milton's Lycidas. Shelley had studied and translated classical elegies. The title of the poem is likely a merging of the Greek "Adonis", the god of fertility, and the Hebrew "Adonai" (meaning "Lord"). Most critics suggest that Shelley used Virgil's tenth Eclogue, in praise of Cornelius Gallus, as a model.It was published by Charles Ollier in July 1821 with a preface in which Shelley made the mistaken assertion that Keats had died from a rupture of the lung induced by rage at the unfairly harsh reviews of his verse in the Quarterly Review and other journals.He also thanked Joseph Severn for caring for Keats in Rome. This praise increased literary interest in Severn's works.Shelley was introduced to Keats in Hampstead towards the end of 1816 by their mutual friend, Leigh Hunt, who was to transfer his enthusiasm from Keats to Shelley. Shelley's huge admiration of Keats was not entirely reciprocated.