Mar Dadishoʿ was the

Catholicos of the East Catholicos of the East may refer to: * Patriarch of the Church of the East * Catholicos of the East and Malankara Metropolitan * Catholicos of India * Maphrian See also * List of patriarchs of the Church of the East {{OrientalOrthodoxy-st ...

from 421 AD to 456 AD. During his reign as Catholicos, in 424 AD, the

Church of the East The Church of the East ( ) or the East Syriac Church, also called the Church of Seleucia-Ctesiphon, the Persian Church, the Assyrian Church, the Babylonian Church, the Chaldean Church or the Nestorian Church, is one of three major branches o ...

declared itself independent of all other churches, resulting in Mar Dadishoʿtaking the title of

Patriarch The highest-ranking bishops in Eastern Orthodoxy, Oriental Orthodoxy, the Roman Catholic Church (above major archbishop and primate), the Hussite Church, Church of the East, and some Independent Catholic Churches are termed patriarchs (and ...

, becoming the first Catholicos-Patriarch of Seleucia-Ctesiphon.

References

Sources

* * * * 4th-century deaths Patriarchs of the Church of the East Year of birth unknown Christians in the Sasanian Empire 5th-century bishops of the Church of the East {{bishop-stub