During this period a rival Catholicos reigned at Akhtamar and King Hethoum II lifted excommunication on that group and decreed that both Akhtamar and Cilician Sees would have distinct power in their own regions.
He tried to bring the Armenian Church into line with the Greeks, an always very controversial issue which caused much discontent towards him.
Near the end of his reign the kingdom was in an era of peace, so Gregory saw it as an opportunity to propose better regulations for ecclesiastical customs and ceremonies.
He composed a religious creed which he gave to King Levon III but then suddenly took ill and died.
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