Eginhartus de vita et gestis Caroli Magni, /
Einhard,approximately 770-840.
Bessel, Johan Friedrich.
Bollandus, Joannes.
Goldast, Melchior,1578-1635.
Schmincke, Johann Hermann.
Trajecti ad Rhenum, ex officina Guilielmi vande Water,...
1711
Charlemagne, Emperor, 742-814