Battle of West-Capelle: <a href="https://en.wikipedia.org/wiki/John_I,_Count_of_Hainaut" id="mwRg" rel="mw:WikiLink" title="John I, Count of Hainaut">John I of Avesnes</a> defeats <a href="https://en.wikipedia.org/wiki/Guy,_Count_of_Flanders" id="mwRw" rel="mw:WikiLink" title="Guy, Count of Flanders">Guy of Dampierre</a>.