Other autonomous particular Churches are headed by a major archbishop.[45] The Syro-Malankara Catholic Church uses the title Catholicos for their major archbishop.[46] With few exceptions, the authority of a major archbishop in his sui iuris Church is equivalent to that of a patriarch in his Church.[47] This less prestigious office[48] was established in 1963 for those Eastern Catholic Churches which have developed in size and stability to allow full self-governance if historical, ecumenical, or political conditions do not allow their elevation to a patriarchate.