Alamannia

And it seems that she had a convincing way about her, as she managed to convince the older brothers to at least support in principle the idea of their baby brother having some share in power after their father's death.

Lothair agreed a few years after Charles' birth that when the young Charles came of age, he would be granted the region of Alamannia, which would roughly correspond to today's Alsace, the area around Lake Constance and the Black Forest.

And when Charles was six years old in 829 AD, he was invested as either the duke or the king of the region.

Our sources are a bit confused by which title he actually held.

So this seems to be all very amicable, but it does seem as soon as Charles was made the ruler of Alamannia at such a young age, his eldest brother began to have a change of heart and over the next couple of months became more and more angry at what he now began to see as the diminishment of his own chunk of the Carolingian world.

Louis the Pious, like his father, was a man interested in the pursuit of knowledge.

While not having a figure as brilliant as Alcuin of York like Charlemagne, he surrounded himself with educated people, one of whom was his librarian, a man called Ebbo.