Errol Leslie Thomson Flynn ( June 20 , 1909 â `` October 14 , 1959 ) was an American movie actor , born in Australia , very famous for his romantic hero roles in Hollywood movies like Captain Blood ( 1935 ) , The Adventures of Robin Hood ( 1938 ) , and Adventures of Don Juan ( 1948 ) . Errol Leslie Flynn ( 20 June 1909 â `` 14 October 1959 ) was an Australian actor .