Years ago, back in the days when I used to have fun, I was at a meeting of the Ontario Archaeological Society. The speaker was promoting the idea that Napoleon had been poisoned by arsenic which was evidenced, apparently, in his hair. So I was able to hold a ziploc bag of Napoleon's reddish-brown hair in my hands. Talk about six-degrees of separation.
Note the differences in the pictures below.
Napoleon Crossing the Alps J.L David, 1800.
Bonaparte Crossing the Alps, Delaroche, 1850
Napoleon on His Imperial Throne, Ingres 1806
Napoleon on His Imperial Throne, OOOPS,
Napoleon at Fontainebleau, Delaroche, 1840
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There's a very enjoyable 2001 film called The Emperor's New Clothes starring Ian Holm as Napoleon. During Napoleon's exile on St. Helena, loyalists hire a doppelganger to swap places with him. While the imposter lives in luxury on the island, the real Napoleon returns to Paris in order to retake the throne. During Napoleon's journey back to France, the imposter dies. When Napoleon, Ian Holm, sets foot on French soil France is in mourning for him but he can't make anybody believe he is the real Napoleon. Antics ensue. Napoleon lodges with a widowed pumpkin seller and shows her little boy magic lantern slides of his exploits. I recommend this film if you have the chance.