 The method of loci is one component of the Art of memory.The Thessalian period in Simonides' career is followed in most biographies by his return to Athens during the Persian Wars and it is certain that he became a prominent international figure at that time, particularly as the author of commemorative verses.According to an anonymous biographer of Aeschylus, the Athenians chose Simonides ahead of Aeschylus to be the author of an epigram honouring their war-dead at Marathon, which led the tragedian (who had fought at the battle and whose brother had died there) to withdraw sulking to the court of Hieron of Syracuse — the story is probably based on the inventions of comic dramatists but it is likely that Simonides did in fact write some kind of commemorative verses for the Athenian victory at Marathon.