Pausanias Description of Greece 1.15.3

[3] At the end of the painting are those who fought at Marathon; the Boeotians of Plataea and the Attic contingent are coming to blows with the foreigners. In this place neither side has the better, but the center of the fighting shows the foreigners in flight and pushing one another into the morass, while at the end of the painting are the Phoenician ships, and the Greeks killing the foreigners who are scrambling into them. Here is also a portrait of the hero Marathon, after whom the plain is named, of Theseus represented as coming up from the under-world, of Athena and of Heracles. The Marathonians, according to their own account, were the first to regard Heracles as a god. Of the fighters the most conspicuous figures in the painting are Callimachus, who had been elected commander-in-chief by the Athenians, Miltiades, one of the generals, and a hero called Echetlus, of whom I shall make mention later.

[3] At the concluding part of the painting [ graphē] are [represented] the men who fought at Marathon, namely, the men from [the city of] Plataea-in-Boeotia and the men from all the territory-of-Athens [= Attica]. They are at the moment of coming into contact in hand-to-hand combat with the barbarians. At this point, the two sides are evenly matched for the action [ ergon], but then, in a close-up of the battle [ makhē], the barbarians are starting to turn and run, heading for the marshland [ helos] and crowding each other [into the morass]. At the outer edges of the painting are [represented] the [beached] ships of the Phoenician navy and the Greeks [ Hellēnes] who are slaughtering those of the barbarians who are scrambling to climb on board. And at this point is painted [ graphesthai] also the hero [ hērōs] by the name of Marathon, after whom the plain [ pedíon] called Marathon gets its name. Also represented [ eikazesthai] is Theseus as he appeared when he was coming back up from under the earth. Also, Athena and Hēraklēs. I say-this-because [ gar], the people of Marathon were the first to establish-the-custom-of-venerating [ nomizein] Hēraklēs as a god [ theos]. Featured most prominently in the painting [ graphē] are Kallimakhos, who had been elected commander-in-chief [ polem-arkhos] by the Athenians, and Miltiades, one of the generals [ stratēgoi]. Also [featured is] a hero [ hērōs] called Ekhetlos, about whom I will make mention [ mnēmē] at a later point as well. 58