Eubuleus

[5] Scholars of the late 20th and early 21st centuries have begun to consider Eubuleus independently as "a major god" of the mysteries, based on his prominence in the inscriptional evidence.

The scholiast presents this narrative element as an aition for the ritual at the Thesmophoria in which piglets are thrown into a sacrificial pit (megara) dedicated to Demeter and Persephone.

Ritual attendants called "bailers" (ἀντλήτριαι, antlêtriai) then descended into the pit and retrieved the decayed remains, which were placed on altars, mixed with seeds, then planted.

Frazer thought that the pigs, rather than merely accompanying Persephone in her descent, were an original feature of the story, representing the "corn spirit" that was later anthropomorphized as the young goddess.

[19] The "First Fruits Decree" (5th century BC) requires sacrifices for Demeter and Kore ("the Maiden," usually identified with Persephone), Triptolemus, Theos (God), Thea (Goddess) and Eubolos.

The inscription with the Lakrateides relief identifies the person making the dedication as a priest of the God and Goddess — that is, of the King and Queen of the Underworld, in reference to mystery cult — and of Eubouleus.