Who wrote "The poetry of earth is never dead" (5)

(Other definitions for keats that I've seen before include "Grecian Urn poet" , "Author of the poem Ode to a Nightingale, d. 1821" , "English poet, d. 1821 in Rome of TB" , "Author of Endymion and Ode to a Nightingale" , "John --, English poet" .)