Son of Henry I of France and Anna of Kiev.
778 – Birth of Louis the Pious.
1117 – Murder of Saint Magnus.
Must-read article about lead pollution across Europe in the twelfth century. The research at Harvard is making interesting discoveries related to events known from medieval sources. I found it via Medievalists.net, but you can also read the article directly via Antiquity.
New dates for famous Norwegian stave churches.
The other chronicle to consult for the Viking Age. Period.