Great Regulars: Initially, there was only a very small

audience for such things: it has been estimated that at the time of Keats' death, the combined sales of the three books published during his lifetime amounted to 200 copies. By the middle of the 19th century, greatly helped by the example of Tennyson, as well as the advocacy of his friends Arthur Hallam (the subject of In Memoriam) and Richard Monckton Milnes (author of the first biography of Keats, which appeared in 1848), things had changed.

from Andrew Motion: The Guardian: An introduction to the poetry of John Keats:

~~~~~~~~~~~