The Man Behind the Pseudonym London, 1853. A child named Joseph Donahue enters a world of modest means, the fourth of many children born to a London porter and an Irish mother. His early years lack the formal structure of an academy, a void that eventually becomes his greatest strength. He spends his youth sketching on the streets of London, earning a meager living through the sheer grit of observation. By his twenties, a shift occurs.…