constantine greek died prominent byzantine general early 11th century active balkans served distinction final stages byzantine conquest bulgaria emperor occupied high commands balkans arrest result participation conspiracy emperor iii imprisoned forced enter monastery committed suicide conspiracy father emperor biography notable member noble family played important role 11th century byzantium began career commander western reign campaigns bulgaria participated decisive byzantine victory battle july subsequently succeeded commander rank making second senior general empire balkans following death bulgaria october dispatched region vanguard emperor main army campaign constructed fortress attested founder inscription conquest completed led troops fertile plain captured prisoners livestock soon placed charge west tasked pursuing bulgarian ruler set ambush informed time led rest troops aid scattering death february charged remaining centres bulgarian resistance took named commander authority extended vassal serbian title possibly serbia greek attested seal attributed ordered subdue sermon ruler consolidate byzantine control northern balkans consequently invited sermon meeting estuary river danube accompanied hidden sword clothes struck sermon marched army taking possession town sermon wife sent captive constantinople succeeded overall byzantine commander conquered bulgaria capacity repelled large invasion year withdrawn south retained nominally role overall commander attested seal naming bulgaria serbia married anonymous daughter brother emperor iii accused prominent balkan generals emperor princess transferred east soon affair confirmed recalled constantinople imprisoned beaten publicly conspirators later forced enter monastery placed convent apparently continued planned advantage absence campaign east escape balkans plot leaked metropolitan conspirators arrested brought palace interrogation committed suicide throwing wall confess torture fellow conspirators constantine son successful general eventually rose emperor
Constantine Diogenes