18th-century Eastern Catholicism

"Sui iuris" eastern catholic church, in full communion with the Catholic Church

thumb|320x320px|Church of the Protection of the Theotokos in Rubtsovo in Moscow, where the Patriarchal Centre of the Old Russian Liturgical Tradition Edinoverie () is an arrangement between certain Russian Old Believers communities and the official Russian Orthodox Church, whereby such communities are treated as a part of the normative Church system while maintaining their own rites. Thus, they are often designated "Old Ritualists" (, staroobryadtsy), as opposed to "Old Believers". The followers of this movement preserve the ancient liturgical rites (like , services according to pre-reform pri