Career
In early 1143 Patriarch Leo and Emperor John II Komnenos died within a few months of each other, bringing a period of turbulence to the Byzantine Church. In order to fully assure his position as emperor, Manuel needed to arrange his coronation. However, to do this he first needed to appoint a patriarch.
His choice fell on the abbot of the monastery of Oxeia, Michael Kourkouas.
The coronation did not take place until November 28, 1143, because Michael threatened to resign for unknown reasons. During his reign Michael had to deal with the highly political trial of a monk called Niphon.
This forbade orthodox believers from associating with him. Michael II resigned in March 1146 to return to the monastery of Oxeia, most likely because of disillusion with the emperor.