He was 25 years old. He was born on October 31, 1795 and died on February 23, 1821.

Source: Complete Poems and Selected Letters of John Keats (introduction by Edward Hirsch)

John Keats' poem "To Fanny" is a love letter to his love interest Fanny Brawne. In the poem, Keats expresses his affection for Fanny and his longing to be with her. The poem captures the intense emotions of love and desire that Keats felt towards Fanny.

The famous poet with four letters in the last name is Keats, referring to John Keats.

It should be John Keats' or John Keats's.

Jon Keats. Do the last name for Horse Isle 2.