Romulus Augustus (born perhaps around 460 – died after 476, possibly alive around 500), is sometimes considered the last Western Roman Emperor (although by other accounts the last Western Roman Emperor was Julius Nepos), reigning from 31 October 475 until 4 September 476. His deposition by Odoacer traditionally marks the end of the Western Roman Empire, the fall of ancient Rome, and the beginning of the Middle Ages in Western Europe.

http://en.wikipedia.org/wiki/Romulus_Augustulus