Никифор Григора
But the siege had to be lifted shortly afterwards by order of the Emperor Andronikos, who requested the help of the Company to defend the prince of Bulgaria (Roger's brother-in-law) from an uprising led by his own uncle. The historian Nicephorus Gregoras, however, claimed that the Emperor's request was a pretext to disguise the impossibility of the Company breaking the resistance of Magnesia. At that time the 500 Alans who still remained on the side of the Company deserted.