Charlemagne and Louis the Pious: Lives by Einhard, Notker, Ermoldus, Thegan, and the Astronomer Published: May 03, 2009 Author: Arts and Letters Charlemagne and Louis the Pious: Lives by Einhard, Notker, Ermoldus, Thegan, and the Astronomer Thomas F. X. Noble Professor History Penn State University Press 2009
