Yohannan VIII Hormizd
Mar Yohannan VIII Hormizd (often referred to by European missionaries as "John Hormez" or "Hanna Hormizd") (1760–1838) was the last hereditary patriarch of the Eliya line of the Church of the East and the first patriarch of a united Chaldean Church. After succeeding his uncle Eliya XII Denha in 1780 as patriarch of Mosul, he made a Catholic profession of faith and was recognised in 1783 by the Vatican as patriarchal administrator and archbishop of Mosul. His career as patriarchal administrator was controversial, and was marked by a series of conflicts with his own bishops and also with the Vatican. Suspended from his functions in 1812 and again in 1818, he was reinstated by the Vatican in 1828. In 1830, following the death of the Amid patriarchal administrator Augustine Hindi, he was recognised by the Vatican as "patriarch of Babylon of the Chaldeans" and the Mosul and Amid patriarchates were united under his leadership. This event marked the birth of the since unbroken patriarchal line of the Chaldean Catholic Church. Yohannan Hormizd died in 1838 and his successor Nicholas I Zaya was chosen by the Vatican, ending the centuries-old practice of hereditary succession in the Eliya line of the Church of the East.
Hormizd II
Hormizd's rock relief at Naqsh-e Rostam in the present-day Fars Province indicates that there was internal turmoil in the empire during his reign. In the relief he is portrayed riding a horse whilst impaling a enemy, whose helmet bears the family signature of Papak, a high-ranking nobleman who served as the "bitakhsh" (viceroy) of Albania during the reign of Bahram II and Narseh. Hormizd, during the last years of his reign, raided the domains of the Ghassanid king in Syria, whom he tried to extract tribute from. The Ghassanid king as a result tried to get assistance from the Roman emperor, but was killed before Roman reinforcements appeared. Hormizd was reportedly in 309 ambushed and killed by Ghassanid troops whilst he was hunting in the desert. The more probable reason for his death was most likely the Iranian nobility that killed him in a secluded place, and now sought to get rid of his sons as well.