Wikipedia has an excellent site with many famous people. Not sure about the Conqueror but Napoleon is there
Napoleon
Napoleon Bonaparte belonged to haplogroup E1b1b1c1* (E-M34*). This haplogroup has its highest concentration in Ethiopia and in the Near East (Jordan). According to the authors of the study, "Probably Napoléon also knew his remote oriental patrilineal origins, because Francesco Buonaparte (the Giovanni son), who was a mercenary under the orders of the Genoa Republic in Ajaccio in 1490, was nicknamed “The Maur of Sarzane” ".[46]
http://en.wikipedia.org/wiki/List_of_haplogroups_of_historical_and_famous_figures#Thomas_Jefferson
