[4] Abu-Musa means "father of Musa" (Moses) in Arabic, in Armenian sources he is surnamed "the Priest's son".
[6] The Armenian historian Movses Kaghankatvatsi, who described Esayi Abu-Isa as a "man of peace", wrote that he ruled the following cantons:[7] In 854, Dizak was invaded by an Abbasid army, commanded by Bugha al-Kabir al-Sharabi, who previously had captured princes Atrnerseh of Khachen, Ktrij of Gardman and Kon-Stepanos Sevordiats of Utik.
Mushegh Bagratuni (the son of Smbat Sparapet, who was forced to join the Abbasid army) recited a poem to this battle, comparing it with the second coming of Christ.
Esayi wrote to the caliph protesting against the attack and after receiving a guarantee of safe passage from him, he went to Bugha for peace talks.
[9] Princess Sophy left an Armenian inscription in the "Red Church" of Toumi, which dates back to 1000, presently preserved in the Artsakh State Museum.