As the Copts continued to recognise Theodosius, the lineage between the Coptic and Melchite split. This split endures until today.
Theodosius spent the last 28 years of his life imprisoned in Upper Egypt and after his death the Coptic Church elected Peter IV as his successor.[2]
Theodosius is commemorated in the Coptic Synaxarion on the 28th day of Ba'unah (June 5), the day of his death.
References
General
Dietmar W. Winkler: Theodosios von Alexandrien (535–566), Ökumenischer Patriarch der Miaphysiten, in: Zeitschrift für katholische Theologie 121 (1999) 396–412.
Dietmar W. Winkler: Theodosios of Alexandria and some theological trends of his time (535–566), in: The Harp. A Review of Syriac and Oriental Ecumenical Studies 21 (2006) 73–89.
"Theodosius I (536)". Official web site of the Greek Orthodox Patriarchate of Alexandria and All Africa. Retrieved 2024-07-05.