Schism of 1552
The schism of 1552 was the division of Church of the East into two factions, one of which entered into communion with Rome becoming part of the Catholic Church at this time and the other remained independent until the 19th century. Although the Eliya line, which emerged as a result of this schism, did eventually enter into communion with Rome, various Eastern Protestant sects with their origins in the Church of the East emerged as a result of this schism.