During the 14th century, small modifications were made to Church of the Holy Apostles, so some parts were decorated later. From the 13th to the 15th century, and in the 17th century, the Serbian Archbishops and Serbian Patriarchs were buried in the churches of the Patriarchate. In 1459–63, after the death of Arsenije II, the patriarchate became vacant upon abolishment by the Ottoman Empire but was restored in 1557 during the reign of sultan Suleiman the Magnificent. The re-establishment was done under the advice of grand vizier Sokollu Mehmed Pasha, while some of Bulgarian eparchies were also placed under its jurisdiction. Georgije Mitrofanović (1550–1630) painted new frescoes in the Church of St. Demetrius in 1619–20. In 1673–74 painter Radul painted the Church of St. Nicholas. In the early 18th century, and especially during and after the Austro-Russian–Turkish War (1735–1739), the patriarchate became the target of the Phanariotes and the Ecumenical Patriarchate of Constantinople, whose goal was to place the eparchies of the Serbian Patriarchate under its own jurisdiction. In 1737 the first Greek head of the Serbian Patriarchate was appointed after the intervention of Alexandros Mavrocordatos, who labeled the Serb leadership "untrustworthy". In the following years the Phanariotes embarked on policy initiatives that led to the exclusion of Serbs in the succession of the patriarchate, which was eventually abolished in September 1766.