Treaty of Verdun
843 treaty dividing the Frankish Empire between the grandsons of Charlemagne / From Wikipedia, the free encyclopedia
The Treaty of Verdun (843) happened two generations after Charlemagne and divided his empire into three parts. When Charlemagne's son Louis the Pious died in 840, his oldest son Lothair I said that he ruled his younger brothers and their lands. But his brothers Louis the German and Charles the Bald won the Battle of Fontenoy (841).