Einhard (also Eginhard or Einhart; Latin: E(g)inhardus; c. 775 – 14 March 840) is a Frankish scholar and courtier. Einhard is a dedicated servant of Charlemagne and his son Louis the Pious; his main work is a biography of Charlemagne, the Vita Karoli Magni, "one of the most precious literary bequests of the early Middle Ages". (Hodgkin, T. (1897). Charles the Great. London: Macmillan. ISBN 9781406730265.)