Battle of Halmyros
... that in the Battle of Halmyros, the Catalan Company annihilated much of the nobility of Frankish Greece and conquered the Duchy of Athens?
... that in the <b id="mwCGw"><a href="./Battle_of_Halmyros" id="mwCG0" rel="mw:WikiLink" title="Battle of Halmyros">Battle of Halmyros</a></b>, the <a href="./Catalan_Company" id="mwCG4" rel="mw:WikiLink" title="Catalan Company">Catalan Company</a> annihilated much of the nobility of <a href="./Frankokratia" id="mwCG8" rel="mw:WikiLink" title="Frankokratia">Frankish Greece</a> and conquered the <a href="./Duchy_of_Athens" id="mwCHA" rel="mw:WikiLink" title="Duchy of Athens">Duchy of Athens</a>?