Constantine Dalassenos
... that Constantine Dalassenos twice came close to marrying Zoë Porphyrogenita and becoming emperor of Byzantium – and twice failed?
... that <b id="mwA_A"><a href="./Constantine_Dalassenos_(duke_of_Antioch)" id="mwA_E" rel="mw:WikiLink" title="Constantine Dalassenos (duke of Antioch)">Constantine Dalassenos</a></b> twice came close to marrying <a class="mw-redirect" href="./Zoë_Porphyrogenita" id="mwA_I" rel="mw:WikiLink" title="Zoë Porphyrogenita">Zoë Porphyrogenita</a> and becoming <a href="./List_of_Byzantine_emperors" id="mwA_M" rel="mw:WikiLink" title="List of Byzantine emperors">emperor of Byzantium</a><span about="#mwt46" data-mw='{"parts":[{"template":{"target":{"wt":"snd","href":"./Template:Snd"},"params":{},"i":0}}]}' id="mwA_Q" typeof="mw:Transclusion mw:Entity"> </span><span about="#mwt46" typeof="mw:Entity">–</span><span about="#mwt46" typeof="mw:Entity"> </span>and twice failed?