In 1552, a schism occurred within the Church of the East: the established "Eliya line" of patriarchs was opposed by a rival patriarch, Sulaqa, who initiated what is called the "Shimun line". He and his early successors entered into communion with the Catholic Church, but in the course of over a century their link with Rome grew weak and was openly renounced in 1672, when Shimun XIII Dinkha adopted a profession of faith that contradicted that of Rome, while he maintained his independence from the "Eliya line". Leadership of those who wished to be in communion with Rome passed to the Archbishop of Amid Joseph I, recognized first by the Turkish civil authorities (1677) and then by Rome itself (1681). A century and a half later, in 1830, headship of the Catholics was conferred on Yohannan Hormizd. Yohannan was a member of the "Eliya line" family, but he opposed the last of that line to be elected in the normal way as patriarch, Ishoʿyahb (1778–1804), most of whose followers he won over to communion with Rome, after he himself was irregularly elected in 1780, as Sulaqa was in 1552. The "Shimun line" that in 1553 entered communion with Rome and broke it off in 1672 is now that of the church that in 1976 officially adopted the name "Assyrian Church of the East", while a member of the "Eliya line" family is one of the patriarchs of the Chaldean Catholic Church.