John Harris, a well-known publisher of children's books, died on 2 Nov 1846 at York Place, Walworth.
Several newspapers reported the fact that he left £800 to literary charities, so he was wealthy; but I can't find a copy of his will. I thought it would be a PCC will, but apparently not (nor a Surrey/London will)
The situation is confused because another John Harris died earlier that year, in about the same place (Camberwell) and at the same age. He did leave a PCC will which also appears in the index to death duty registers.
Richard