The duke of Wellington was once asked whether any of the countless caricatures which had been published over the years had annoyed him. "Not a bit, not a bit," he replied. "There is only one caricature that has ever caused me annoyance -- Douro."
[Lord Douro, to whom Wellington bore an extraordinary resemblance, was the duke's eldest son.]
Sources
C. Shriner, Wit, Wisdom and Foibles of the Great