Passage: In subsequent years, Lovecraft wrote, the Azif "gained considerable, though surreptitious circulation amongst the philosophers of the age." In 950, it was translated into Greek and given the title Necronomicon by Theodorus Philetas, a fictional scholar from Constantinople. This version "impelled certain experimenters to terrible attempts"  before being "suppressed and burnt" in 1050 by Patriarch Michael (a historical figure who died in 1059).

Question: What is the last name of the fictional scholar from Constantinople?
Philetas