Under such circumstances, the most violent friction between the brothers was unavoidable. And this really came to pass immediately after the death of the first Louis. In order to accomplish his ignoble designs, the eldest brother Lothair endeavoured first of all to sow the seeds of discord, in order to overwhelm first one brother by the help of the other, and afterwards his ally. Intent on these designs, he set off across the Alps as soon as he received the news of the death of his father. Then he sent messengers through all the countries of the Frankish Empire to announce that he had succeeded his father as emperor, and demanding of all his vassals homage and fealty. What rights the emperor held in opposition to the kings no one knew, and Lothair’s command that they should swear allegiance to him in the former capacity was the best means of puzzling the vassals and of gaining them over afterwards to his side. The mighty knew as little of justice in those days as in many subsequent periods; the might of the strongest was their law, and the vassals had been accustomed, more especially during the civil wars of Louis I’s time, to go over first to one party and then to the other, in utter contempt of their oath of fealty, according to the favours or frowns of fortune. Lothair had undertaken his progress across the Alps at the head of a considerable army, and as he, on his arrival in Gaul, was thought to be the stronger, on account of the weakening of his younger brother Charles through war with his nephew, many of the vassals in France ranged themselves on the side of the emperor. Promises were not wanting, and soon he stood at the head of a powerful faction.
His most dangerous rival was Ludwig the German; and in order first to annihilate him, Lothair endeavoured to persuade his half-brother Charles to become his ally. To this end, he promised the latter to respect the partition which his father had made during his lifetime. Believing that he had thus won his brother over, he set forth from Worms at the head of his army across the Rhine and drew near to Frankfort-on-Main. Ludwig had fortified himself beforehand against his brother, and had tried more especially to unite all Germans in opposition to Lothair. But great confusion prevailed in Germany in both the domains of world-policy and of politics in which the nation was interested. The Germans regarded the Frankish kings with a certain amount of indifference; and thus, more especially with regard to the north Germans, it concerned Ludwig quite as much as his brother to organise a serious resistance among the true Germans. They could not see why they should side with this brother or with that, as the quarrel seemed to be only a matter of private advantage. Therefore when Lothair had crossed the Rhine, Ludwig invested Frankfort, and was resolved to oppose the advance of his brother; yet the lukewarm attitude of the people made him anxious, and he was glad to accept the overtures which Lothair made. Both were irresolute, and therefore it was easily agreed to defer the decision. Lothair sought to gain time in order to entangle his half-brother Charles still more deeply, and Ludwig wished for a cessation of hostilities in order to work up public spirit in Germany to take a warmer interest in his cause. The emperor was actually successful in coming to an agreement with Charles; and when he felt the ground safe on that side, he resolved to make a more serious attack on Ludwig. Early in the year 841 he marched with a strong army to cross the Rhine for the second time, after having by various promises made a bid for the favour of the Germans. Ludwig’s efforts in the same direction for the reasons given had not met with particular success; the superiority in arms was on Lothair’s side, and Ludwig was therefore forced to retreat before him.
CHARLES THE BALD AND LUDWIG THE GERMAN UNITE
[840-841 A.D.]