The <a href="https://en.wikipedia.org/wiki/Byzantine_civil_war_of_1341–1347" id="mwFg" rel="mw:WikiLink" title="Byzantine civil war of 1341–1347">Byzantine civil war of 1341–1347</a> formally begins with the proclamation of <a href="https://en.wikipedia.org/wiki/John_VI_Kantakouzenos" id="mwFw" rel="mw:WikiLink" title="John VI Kantakouzenos">John VI Kantakouzenos</a> as <a href="https://en.wikipedia.org/wiki/List_of_Byzantine_emperors" id="mwGA" rel="mw:WikiLink" title="List of Byzantine emperors">Byzantine Emperor</a>.