<P> The most famous of Einhard 's works is his biography of Charlemagne , the Vita Karoli Magni , `` The Life of Charlemagne '' ( c. 817 -- 836 ) , which provides much direct information about Charlemagne 's life and character , written sometime between 817 and 830 . In composing this he relied heavily upon the Royal Frankish Annals . Einhard 's literary model was the classical work of the Roman historian Suetonius , the Lives of the Caesars , though it is important to stress that the work is very much Einhard 's own , that is to say he adapts the models and sources for his own purposes . His work was written as a praise of Charlemagne , whom he regarded as a foster - father ( nutritor ) and to whom he was a debtor `` in life and death '' . The work thus contains an understandable degree of bias , Einhard taking care to exculpate Charlemagne in some matters , not mention others , and to gloss over certain issues which would be of embarrassment to Charlemagne , such as the morality of his daughters ; by contrast , other issues are curiously not glossed over , like his concubines . </P>
<P> The most famous of Einhard 's works is his biography of Charlemagne , the Vita Karoli Magni , `` The Life of Charlemagne '' ( c. 817 -- 836 ) , which provides much direct information about Charlemagne 's life and character , written sometime between 817 and 830 . In composing this he relied heavily upon the Royal Frankish Annals . Einhard 's literary model was the classical work of the Roman historian Suetonius , the Lives of the Caesars , though it is important to stress that the work is very much Einhard 's own , that is to say he adapts the models and sources for his own purposes . His work was written as a praise of Charlemagne , whom he regarded as a foster - father ( nutritor ) and to whom he was a debtor `` in life and death '' . The work thus contains an understandable degree of bias , Einhard taking care to exculpate Charlemagne in some matters , not mention others , and to gloss over certain issues which would be of embarrassment to Charlemagne , such as the morality of his daughters ; by contrast , other issues are curiously not glossed over , like his concubines . </P>
when did einhard write the life of charlemagne
when did einhard write the life of charlemagne
sometime between 817 and 830
sometime between 817 and 830