The American diocese was established in 1979 by Thomas Makarios. In 1991, after the death of Makarios, Mathews Barnabas was enthroned as metropolitan in 1993. In 2002, Zachariah Nicholovos was appointed as the assistant metropolitan.
According to order number 01/2017,[7] Eusebius was transferred to the Diocese of Mavelikkara. Subsequently the Malankara Metropolitan assumed control over the diocese and Zacharias Aprem was appointed as the assistant metropolitan to the diocese. In October 2022, Thomas Ivanios was appointed as the permanent Diocesan Metropolitan bringing an end to the temporary administrative set up that lasted for over five years.
Today
As of April 2020, there are 63 churches in the southwest diocese.[8]
Enthroned as the Second metropolitan of the American Diocese. The American Diocese split into the Northeast American Diocese and Southwest American Diocese in 2009
^"Home". Malankara Orthodox Diocese of Southwest America. Retrieved 1 February 2022. Malankara Orthodox Syrian Church,Diocese of South-West America, 3101 Hopkins Rd Beasley, TX 77417 - Compare to the Beasley city limits (rotate the map until it points north, and compare with the location of the headquarters) - Also see map from theU.S. Census Bureau. Note that the city of Houston stated in 1996 that: "The U.S. Postal Service establishes ZIP codes and mailing addresses in order to maximize the efficiency of their system, not to recognize jurisdictional boundaries."
^"Parishes." Diocese of South-West America. Retrieved on 27 October 2011.
Shehimo: Book of Common Prayer. (n.d.). (n.p.): Liturgical Resource Development.
Konat, J. A. (n.d.). Service Book of the Holy Qurbono: English with Commentary & Malayalam with Transliteration. (n.p.): Malankara Orthodox Church Publications.
Y. M. A., Irenaios, Y. M. (2017). A Study of the Experience of the Unspeakable and Its Manifestations in Selected Mystic Saints and Holy Persons in the Malankara Orthodox Syrian Church. India: SFS Publications.
The Book of Common Prayer of the Syrian Church. (2005). United States: Gorgias Press.
Krikorian, M. K. (2010). Christology of the Oriental Orthodox Churches: Christology in the Tradition of the Armenian Apostolic Church. Austria: Peter Lang.