Who wrote 'Ode to a Nightingale'?

John Keats is called the Poet of beauty. His famous works are Ode to a Nightingale, Endymion, Hyperion, Lamia, ode to Autumn, Ode to Psyche, A part of Lovers, Bright Star, A daughter of Sunshine, Give Me Women, Wine, and Snuff, The eve of St. Agnes etc. Source: Website lecture.
Source: Website lecture and Encyclopedia Britannica.