Charles I, Charlemagne, King of the Franks (768-814), Roman Emperor (as of 800); (747-814) / Charlemagne is crowned by Pope Leo III on 25 Dedember 800 in St. Peter's in Rome. Illumination, French, 2nd quarter of. 15th century: From: Grandes Chroniques de France (Chroniques de Saint-Denis). Ms Royal 16 G.VI, fol. 141 v, London, British Library.