The appeal of young Andronicus to be allowed to come to Constantinople to justify himself was answered by an imperial rescript ordering the Patriarch to ‘strike out the rebel’s name from public prayers’. The Patriarch refused.[97] More than that, His Holiness threatened to unfrock any priest who would obey the imperial command. Old Andronicus had the Patriarch deposed by a packed synod of his creatures, and thrown into prison.[98] War broke out. After an unsuccessful attempt to surprise Constantinople,[99] young Andronicus besieged the army of his grandfather and the Serbians in Serres. They did not care to risk a battle, so he marched on Salonika, which he captured through the connivance of its inhabitants.[100] Macedonia and Thrace, with the exception of two or three fortresses, fell into his hands without a struggle.[101] Stephen, Kral of Serbia, now turned a deaf ear to the old emperor’s reiterated appeals for further aid. In his desperation, old Andronicus called in the Bulgarians, to whom he would have betrayed Constantinople, had not young Andronicus appeared in time to anticipate this culminating infamy of the older Palaeologos. A Venetian fleet, which was besieging the city, retired, because its commander did not want to appear to take sides either for or against the younger emperor. Friends inside left a gate open. Young Andronicus entered and appeared suddenly at the palace. The Patriarch was re-established. Old Andronicus was deposed and imprisoned.[102] The old man, after having become, as Gregoras charitably puts it, ‘blind through tears’,[103] retired to a monastery, and died there in great poverty.[104] Like many others of the Palaeologi, Andronicus II had no redeeming trait of character, no single good deed to his credit. Stranger to every natural affection, he died as he had lived, hating his own flesh and blood, striving to ruin his country, mocking God by the very monk’s garb that he wore. The first care of young Andronicus, after ridding himself of his grandfather and rival, was to march on Adrianople, where, according to Cantacuzenos, he forced Michael Asan of Bulgaria to make peace by the display of his ‘fine army’.[105] Either the Bulgarians were very weak at this time, or the ‘fine army’ of Andronicus III melted away quickly. For in the spring of the following year, 1329, Andronicus had to ‘gather hastily’[106] an army, when for the first time he felt it his duty to go to the aid of beleaguered Nicaea. He crossed the Bosphorus, and joined the battle with the Osmanlis at Pelecanon, now Maltepé, on the north shore of the gulf of Nicomedia, a few miles from Chalcedon, the modern Haïdar Pasha.