Career
Before him, heads of the Georgian Church only bore the title of Catholicos of Kartli. The unification of Georgia into a single kingdom by Bagrat III (r 975–1014) led to the change in title. In 1031, Melkisedek successfully petitioned Bagrat III for tax immunity for the Church, demonstrating the important power the Church had at the time and its influence over the State.
He visited Constantinople several times, and met with the Byzantine Emperor Basil World War II His feast is celebrated on October 14.