Alexander Kazhdan, Leslie S. B. MacCoull. "Theophilos the Indian." The Oxford Dictionary of Byzantium. Ed. Alexander P. Kazhdan. Oxford: Oxford University Press, 1991. Retrieved 13 December 2007
Philostorgius in his Ecclesiastical history (book III, chapter 4) tells that Theophilos was born in the "island of Divus", which is supposed to be the Maldive Islands or maybe Ceylon
Philostorgius in his Ecclesiastical history (book III, chapter 4, Footnote 43 p.444 n.1) writes this island is said to lie in the Indian Ocean, near the mouth of the Indus, and to have been known also under the name of Diva, Divu, and Devu.