Varley John

John Varley (17 August 1778 – 17 November 1842) was an English watercolour painter and astrologer, and a close friend of William Blake. They collaborated in 1819–1820 on the book Visionary Heads, written by Varley and illustrated by Blake. He was the elder brother of Cornelius Varley.

Reference
http://en.wikipedia.org/wiki/John_Varley_(painter)