Portrait of the Bishop of London, engraved by William Holl, from a bust by Behnes.  Sunday Under Three Heads was dedicated by Dickens to the “Right Reverend The Bishop of London.”  Dickens used the pen name “Timothy Sparks.”  Sunday Under Three Heads was written as a protest against a Bill introduced in Parliament that would prohibit all work and all recreation on Sunday.  The Bishop of London had declaimed against the viciousness of the recreations engaged in by the poor on the Sabbath, and thus tacitly supported the Bill.  Dickens, therefore, sarcastically dedicated his little political tract to the Bishop.  Sunday Under Three Heads is Dickens’s first entry into the social protest arena.  The “poor” against the “rich” would be reflected in a number of Dickens’s later works.