- J.K. Rowling
English author famous as the creator of the phenomenally successfully Harry Potter series.
The seven-book series is the most successful in history, selling more than 400 million copies worldwide. The resulting eight film adaptations grossed around $8bn, all helping 'Jo' Rowling leave her poverty behind and become one of the world's richest entertainers.
Her first 'adult' book, and the first non-Potter title, is 2012's The Casual Vacancy.