Analysis of information sources in references of the Wikipedia article "Apollodorus of Damascus" in English language version.
Most scholars believe that it is not true that Hadrian ordered the assassination of the architect. [...] There is ... serious reason to doubt the anecdote about Hadrian murdering Apollodorus, and its origin may have been that the architect died - of natural causes - at the beginning of Hadrian's reign, when several senators were executed.
... the brilliant architect Apollodorus of Damascus. This famous Syrian personage ...ISBN 88-8265-233-5