The picture below shows a red-haired Sir Charles Colville. He was a British Army officer who served in the Napoleonic Wars.
We also have news that Sir Hudson Lowe, the "gaoler" of Napoleon Bonaparte was a redhead. According to the book History of Napoleon, Volume 2 by George Moir Bussey Napoleon described him as red-haired, ruddy and freckled.
Also, while on the French theme, I should mention that François Ravaillac, the murderer of Henry IV of France, was also said to be a redhead.