- Welcome to THE BYZANTINE CATHOLIC CHURCH, INC. **INDEPENDENT JURISDICTION**INC.-1964** P.O. Box 3682 Los Angeles, CA 90078-3682 USA OFFICE:1-818-594-0662-9AM-3PM Staff / Leaders Our Beloved Patriarch Elected in 1967 Mar +Markus I. Send an Email... Metropolitan General of America Most Rev. Mathew B. Clark, OSB Send an Email... Weekly Schedule The Patriarchate 9AM-3PM-Mon-Fri. Met. Gen. of America ...www.netministries.org/see/churches/ch02254