I think Napoleon was short for his time. At least, contemporaries spoke of him as short.
http://en.wikipedia.org/wiki/Napoleon_Bonaparte#Napoleon.27s...
"Many historians have recently argued that, contrary to popular belief, Napoleon was not short as often depicted in popular culture. Although historians disagree on Napoleon's precise height, it has been suggested that he was actually slightly taller than the average early 19th-century Frenchman.[27] Some historians claim the French emperor's height was recorded as 5 ft. 2 in French units, corresponding to 1.68 meters or 5 ft. 6 in Imperial units."