It was the custom of the Serbian kings to give appanages to their sons, and the inevitable consequence of this system was the series of provincial rebellions which occurred in almost every reign. When the revolt succeeded, the father (or brother) was granted in his turn a small appanage. In this case it was the son who was exiled, but he was recalled in 1319 and a reconciliation took place. Milutin died in 1321 and was succeeded by his son, Stephen Uroš III, who reigned till 1331. He is known as Stephen Dečanski, after the memorial church which he built at Dečani in western Serbia. His reign was signalized by a great defeat of the combined Bulgarians and Greeks at Kustendil in Macedonia in 1330. The following year his son, Stephen Dušan, rebelled against him and deposed him. Stephen Dušan, who reigned from 1331 till 1355, was Serbia’s greatest ruler, and under him the country reached its utmost limits. Provincial and family revolts and petty local disputes with such places as Ragusa became a thing of the past, and he undertook conquest on a grand scale. Between 1331 and 1344 he subjected all Macedonia, Albania, Thessaly, and Epirus. He was careful to keep on good terms with Ragusa and with Hungary, then under Charles Robert. He married the sister of the Bulgarian ruler, and during his reign Bulgaria was completely under Serbian supremacy. The anarchy and civil war which had become perennial at Constantinople, and the weakening of the Greek Empire in face of the growing power of the Turks, no doubt to some extent explain the facility and rapidity of his conquests; nevertheless his power was very formidable, and his success inspired considerable alarm in western Europe. This was increased when, in 1345, he proclaimed his country an empire. He first called together a special Church council, at which the Serbian Church, an archbishopric, whose centre was then at Peć (in Montenegro, Ipek in Turkish), was proclaimed a Patriarchate, with Archbishop Joannice as Patriarch; then this prelate, together with the Bulgarian Patriarch, Simeon, and Nicholas, Archbishop of Okhrida, crowned Stephen Tsar of the Serbs, Bulgars, and Greeks. Upon this the Patriarch of Constantinople gave himself the vain satisfaction of anathematizing the whole of Serbia, as a punishment for this insubordination.