The god and goddess mentioned in the title of this official are Pluto and Persephone, but it remains unclear who Eubouleus is. According to one theory, he is Chthonic Zeus. Another view holds that the three deities are of Pelasgian origin and therefore anonymous, as was customary in this ancient religious tradition. The primary source of information about the priest is the famous relief of Lacrateides, who seems to have served in this position. Lacrateides dedicated this impressive work of art on behalf of himself, his sons, Sostratos and Dionysios, and his wife, Dionysia. Lacrateides is identified by an inscription, which states his name and title (“Priest of the God and the Goddess and Eubouleus”). His long hair falls on his shoulders, and he wears the strophion. Another “Priest of the God and the Goddess” priest of god and goddess" is Eireneos, the son of Eireneos of the deme Paiania. The absence of Eubouleus from his title suggests that the priest did not always serve all three deities. The office belonged to the genos of the Eumolpidae but did not enjoy hieronymy, which indicates its low importance in the context of the Eleusinian cult.

Relief no. EL. 107. Dedicated by the priest Lacratides (1st century BC), Konstantinos Kourouniotis, φωτογραφία, Εν Αθήναις Αρχαιολογική Εταιρεία © Η εν Αθήναις Αρχαιολογική Εταιρεία