The only problem is that St. Gregory was not a member of the Armenian Catholic Church. He was Oriental Orthodox. Not that I am complaining about the honor. I just find it stunning.
“The only problem is that St. Gregory was not a member of the Armenian Catholic Church.”
Well, not if the Armenian Catholics took him with them so to speak. And that’s clearly what happened. The Catholic Church is INCREDIBLY generous about saints from breakaway churches that re-established communion later on. This case is NOTHING compared to that of St. Photios - who appears in the Ruthenian Typicon (a Catholic document). But it looks like he - Photios - did die in union with the Church: https://thebananarepublican1.wordpress.com/2009/10/16/st-photios-the-great-died-in-communion-with-rome/