Editing Louis the Pious (section)

===Third civil war===
In 837, Louis crowned Charles king over all of Alemannia and Burgundy and gave him a portion of his brother Louis's land. Louis the German promptly rose in revolt, and the emperor redivided his realm again at [[Quierzy-sur-Oise]], giving all of the young king of Bavaria's lands, save Bavaria itself, to Charles. Emperor Louis did not stop there, however. His devotion to Charles knew no bounds. When Pepin died in 838, Louis declared Charles the new king of Aquitaine. The nobles, however, elected Pepin's son [[Pepin II of Aquitaine|Pepin II]]. When Louis threatened invasion, the third great civil war of his reign broke out. In the spring of 839, Louis the German invaded Swabia, Pepin II and his Gascon subjects fought all the way to the [[Loire]], and the Danes returned to ravage the [[Frisia]]n coast (sacking [[Dorestad]] for a second time).

Lothair, for the first time in a long time, allied with his father and pledged support at Worms in exchange for a redivision of the inheritance. At a final ''[[placitum]]'' held at Worms on 20 May, Louis gave Bavaria to Louis the German and disinherited Pepin II, leaving the entire remainder of the empire to be divided roughly into an eastern part and a western. Lothair was given the choice of which partition he would inherit and he chose the eastern, including Italy, leaving the western for Charles. The emperor quickly subjugated Aquitaine and had Charles recognised by the nobles and clergy at [[Clermont-en-Auvergne]] in 840. Louis then, in a final flash of glory, rushed into Bavaria and forced the younger Louis into the [[March of Pannonia|Ostmark]]. The empire now settled as he had declared it at Worms, he returned in July to [[Frankfurt am Main]], where he disbanded the army. The final civil war of his reign was over.<ref name=jong/><ref name="Riche1993"/>