Emperor John V Paleologos and Rome

The longest ruling Byzantine emperor of the fourteenth century, John V Paleologos (r. 1341–1391), continued to hope that the West would come to the aid of the Greeks in the face of the ever-increasing expansion of the realm of the Ottoman Turks that arose in northwestern Asia Minor in the 1280s. In 1369 John personally entered into communion with the Roman Church, though without making an attempt at formal Church union. This act also produced no lasting results, either for the ecclesiastical or political destiny of Constantinople.