Despoina

In Greek mythology, Despoina, Despoena or Despoine, was the daughter of Demeter and Poseidon and sister of Arion. She was the goddess of mysteries of Arcadian cults worshipped under the title Despoina, "the mistress" alongside her mother Demeter, one of the goddesses of the Eleusinian mysteries. Her real name could not be revealed to anyone except those initiated to her mysteries. Pausanias spoke of Demeter as having two daughters; Kore being born first, then later Despoina. With Zeus being the father of Kore, and Poseidon as the father of Despoina. Pausanias made it clear that Kore is Persephone, though he wouldn't reveal Despoina's proper name.

In the myth, Poseidon saw Demeter and desired her. To avoid him, she took her archaic form of a mare, but he took the form of a stallion and mated with her. From this union Demeter bore a daughter Despoina and a fabulous horse Arion (Ἀρείων). Due to her anger at this turn of events, Demeter took on the epithet Erinys, or raging.

The word Despoina, "mistress" (Δέσποινα), is derived from *des-potnia, "lady or mistress of the house", from PIE *dóm(h_a)os, "house(hold)" [*dem(h_a)-, "build"] and *potnih_a-, "lady, mistress"; cf. Greek and potnia. The masculine form is , "master of the house" (Δεσπότης); cf. . Related attested forms are the, written in the Linear B syllabary, Mycenaean Greek , po-ti-ni-ja, (potnia) and perhaps ...
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