Yeghishe I also known as Yeghishe I Rshtunetsi () (birthday unknown, born in Rshtunik, Armenia â died 946, Aghtamar, Armenia) was the Catholicos of All Armenians in 941âÂÂ946. Yeghishe I succeeded his brother Catholicos Theodore I. Ruled the Church from Aghtamar, at the time â the Holy See of the Armenian Apostolic Church. Yeghishe Rshtunetsi was the Bishop of Rshtunik and after the death of Theodore I was elected Catholicos by the initiative of the King of Vaspurakan.