John Doyle was born into an impoverished Roman Catholic family in Dublin in 1797. Doyle arrived in London in 1821 where he hoped to establish himself as a portrait painter. Although he occasionally exhibited at the Royal Academy he failed to sell enough pictures and by 1827 had turned to lithography.
Over the next few years he revolutionized the art of caricature and his work differed greatly from previous cartoonists such as Thomas Rowlandson and James Gillray who attempted to make their subjects look ugly and ridiculous. John Doyle concentrated on politicians, and although he favoured the Whigs, mainly because of their views on Catholic Emancipation, he was never too harsh on the Tories.
Doyle's pictures appeared in The Times between 1829 and 1851. His drawings were always signed H.B. and at the time very few people knew his real name. Doyle's cartoons were daily commentaries of political events and were sometimes accompanied by an article explaining their meaning. John Doyle died on 2nd January 1868. One of his sons, Richard Doyle, was also a cartoonist. His other son, Charles, was the father of the writer, Arthur Conan Doyle.