Chuck and Louis pledged fraternité
‘Fore the soldiers of their grandes armeés
Lothair, between the deux
Could not believe his yeux
Uninvited was he to partay

Event: Charles the Bald and Louis the German swear the Oaths of Strasbourg, pledging to aid each other and oppose their older brother, Lothair. The version of the Oaths in Old French is believed to be the oldest surviving text written in a Romance language.
Year: 842
Learn more: http://en.wikipedia.org/wiki/Oaths_of_Strasbourg