Pausanias Description of Greece 1.38.3

[3] When the Eleusinians fought with the Athenians, Erekhtheus, king [ basileus] of the Athenians, was killed, as was also Immarados, son of Eumolpos. These were the terms on which they concluded the war: the Eleusinians were in all ways to be subject to the Athenians—except that would be on their own in ritually-conducting [ teleîn] the [Eleusinian] mysteries [ teletē]. The sacred-rites [ hiera] for the Two Goddesses [ theai] would be performed [ drân] by Eumolpos and by the daughters of Keleus, whom Pamphos and Homer agree in naming Diogénia, Pammerope, and, the third, Saisara. Eumolpos was survived by Keryx, the younger of his sons whom the Kerykes themselves say was a son of Aglauros, daughter of Kekrops, and of Hermes, not of Eumolpos.