Death of the first English king, Egbert.
837. First incursion of the Danes up the Rhine.
838. The Danes sail up the Loire and ravage the country as far as Tours.
Caliph Montassem invades Asia Minor.
839. Venetians repress the piracy of the Dalmatians, but lose their ships in an attack on the Saracens at Tarento.
840. Death of Louis le Débonnaire at Ingelheim; his empire divided into three separate states: Lothair (Emperor), taking Italy; Charles, France; Louis, Bavaria or Germany. Disputes follow.
841. Louis and Charles unite to resist the pretensions of Lothair; he is defeated at the battle of Fontenailles (Fontenay).
Rouen plundered by the Danes under Hastings.
842. A final sanction to image-worship is given by the Council of Constantinople.
The "Oath of Strasburg," a valuable matter of philology and history, which shows that in 841 the distinctions of race and language were beginning to make themselves felt. It sealed the pact made between Louis of Austrasia and Charles of Neustria.