Constantine VIII
... that Constantine VIII was crowned as co-emperor of the Byzantine Empire in 962 but had to wait 63 years before becoming sole ruler?
... that <b id="mw2Q"><a href="./Constantine_VIII" id="mw2g" rel="mw:WikiLink" title="Constantine VIII">Constantine VIII</a></b> was crowned as <a href="./List_of_Byzantine_emperors" id="mw2w" rel="mw:WikiLink" title="List of Byzantine emperors">co-emperor</a> of the <a href="./Byzantine_Empire" id="mw3A" rel="mw:WikiLink" title="Byzantine Empire">Byzantine Empire</a> in 962 but had to wait 63 years before becoming sole ruler?