"Isaac Robert Cruikshank, sometimes known as Robert Cruikshank (27 September 1789 – 13 March 1856) was a caricaturist, illustrator, and portrait miniaturist, the less well-known brother ...
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of George Cruikshank, both sons of Isaac Cruikshank. Just like them he holds importance as a pioneer in the history of comics for creating several cartoons which make use of narrative sequence and speech balloons." - (en.wikipedia.org 10.08.2021)