roger de flor arrived in constantinople with the help of king frederick iii of sicily in 1303, and married the niece of andronicus, daughter of the tsar of bulgaria, and was named megas doux ('great dux', i.e. head of the fleet). roger de flor campaigned with his company in anatolia, defeating the turks but also engaging in widespread violence and looting of the byzantine inhabitants. by this point, the catalans, were considered by the byzantines to be little better than brigands and freebooters.