… Image Joseph Severn, ‘Posthumous Portrait of Shelley Writing Prometheus Unbound’, 1845, Keats-Shelley Memorial House, Rome, Italy. https://commons.wikimedia.org/wiki/File:Joseph_Severn_-_Posthumous_Portrait_of_Shelley_Writing_Prometheus_Unbound_1845.jpg Image Curran, Amelia, ‘Percy Bysshe Shelley’, © National Portrait Gallery, NPG 1234, 1819 … (1792-1822) purposely cultivated numerous friendships with the most talented writers of his time. In his preface to Prometheus Unbound , Shelley even endeavoured to theorize the complex workings of poetic influence, implicitly …