Emperor <a href="https://en.wikipedia.org/wiki/Constantius_II" id="mwGA" rel="mw:WikiLink" title="Constantius II">Constantius II</a> enters <a href="https://en.wikipedia.org/wiki/Rome" id="mwGQ" rel="mw:WikiLink" title="Rome">Rome</a> for the first time to celebrate his victory over <a href="https://en.wikipedia.org/wiki/Magnentius" id="mwGg" rel="mw:WikiLink" title="Magnentius">Magnus Magnentius</a>.