He appoints his son Lothair co-emperor; his other sons, Pepin and Louis the German, govern Aquitaine and Bavaria respectively.
Citation:
Editors. "Louis the Pious divides the Frankish empire".
The Literary Encyclopedia. First published 01 May 2009
[http://www.litencyc.com/php/stopics.php?rec=true&UID=6909, accessed 19 June 2013.]