Athanasius
... that the 6th-century Byzantine official Athanasius was dispatched by Justinian I to Ravenna in 536 and Carthage in 545, and he ended up in prison on both trips?
... that the 6th-century <a href="./Byzantine_Empire" id="mwCSU" rel="mw:WikiLink" title="Byzantine Empire">Byzantine</a> official <b id="mwCSY"><a href="./Athanasius_(praetorian_prefect)" id="mwCSc" rel="mw:WikiLink" title="Athanasius (praetorian prefect)">Athanasius</a></b> was dispatched by <a href="./Justinian_I" id="mwCSg" rel="mw:WikiLink" title="Justinian I">Justinian I</a> to <a href="./Ravenna" id="mwCSk" rel="mw:WikiLink" title="Ravenna">Ravenna</a> in 536 and <a href="./Carthage" id="mwCSo" rel="mw:WikiLink" title="Carthage">Carthage</a> in 545, and he ended up in prison on both trips?