Cyril of Jerusalem
   
Cyril was the Bishop of 
Jerusalem when the earthquake(s) of 363 CE struck. After the 
earthquake, Cyril is believed to have written a letter describing 
the event and its effects. The surviving text, however, may have 
been composed later under his name — a case of attributed 
authorship or 
pseudepigrapha — using 
Cyril’s original letter as a source.
Cain and Lenski (2009) argue 
that the letter is probably not genuine and was likely composed 
in Syriac during the 5th century CE. Although they doubt Cyril’s 
authorship, they acknowledge that the letter may have been based 
on an earlier Jerusalem document, given its precise knowledge of 
the city’s topography and unique details about the Christian 
community’s actions.
Brock (1977) also observed that the internal 
consistency of the chronological information strengthens the 
letter’s credibility.