Signing of the <a href="https://en.wikipedia.org/wiki/Treaty_of_Saint-Clair-sur-Epte" id="mwHA" rel="mw:WikiLink" title="Treaty of Saint-Clair-sur-Epte">Treaty of Saint-Clair-sur-Epte</a> between <a href="https://en.wikipedia.org/wiki/Charles_the_Simple" id="mwHQ" rel="mw:WikiLink" title="Charles the Simple">Charles the Simple</a> and <a href="https://en.wikipedia.org/wiki/Rollo" id="mwHg" rel="mw:WikiLink" title="Rollo">Rollo</a> of Normandy.