Who wrote the biography of William Blake?

There isn't one single definitive biography of William Blake. Many authors have written about Blake's life and work, each offering different perspectives and interpretations.

Here are some notable biographies of William Blake:

* "The Life of William Blake" by Alexander Gilchrist (1863): This is often considered the first full-length biography of Blake and remains a valuable resource.

* "William Blake: The Man and His Circle" by Mona Wilson (1948): This biography provides a detailed account of Blake's life and relationships.

* "Blake" by Peter Ackroyd (1995): This acclaimed biography presents a vivid and engaging portrait of Blake's life and work.

* "William Blake" by Stephen Gill (2006): This biography focuses on Blake's artistic practice and his relationship with the Romantic movement.

There are also many other shorter biographies and critical studies of Blake available. You can find a more comprehensive list by searching online or visiting your local library.