At the same time, the long coexistence and rivalry between two traditionalist patriarchal branches — the senior Eliya line of Alqosh and the junior Shimun line of Qochanis — ended in 1804 when the last primate of the Eliya line, Patriarch Eliya XII (XIII) died and was buried in the ancient Rabban Hormizd Monastery. His branch decided not to elect a new patriarch, thus enabling the remaining patriarch Shimun XVI Yohannan (1780–1820) of the Shimun line to become the sole primate of both Assyrian traditionalist branches. Consolidated after 1804, the reunited traditionalist church led by patriarchs of the Shimun line became widely known as the "Assyrian Church of the East". Still based in Qodchanis, Assyrian Patriarch Shimun XVI Yohannan was not able to secure control over the traditional seat of the former Eliya line in the ancient Rabban Hormizd Monastery; and around 1808 that venerated monastic institution passed to the Chaldean Catholics.