They are involved in the myth in which Hades falls in love with Persephone, and abducts her to the underworld to be his wife. Demeter, who loved her daughter more then anything, stopped doing her job and searched for Persephone. She found her in the Underworld and talked to Zeus. An agreement was made that half the year Persephone is with Demeter (Spring/Summer) and half the year Persephone is with Hades (Fall/Winter)
The abduction of Persephone.
Where Persephone was kidnapped by Hades and then Demeter went looking for her and when she found her daughter, demanded her return only to find that Persephone had then eaten of the food of the Underworld, she was then made to spend half the year with her mother and half with Hades as his wife.
Hecate was a part in the myth of Persephone, Demeter, and Hades. She helped Demeter to find her daughter. After the mother-daughter reunion became she Persephone's minister and companion in Hades.
Zeus sent the god Hermes to intervene in the myth of Demeter and Persephone. Hermes acted as a messenger between Hades and Demeter, helping to negotiate Persephone's release from the Underworld.
Hades is the brother of Demeter in Greek mythology. Demeter is the goddess of the harvest and agriculture, while Hades is the god of the underworld. Their most well-known connection comes from the myth of Persephone, who is Demeter's daughter and becomes Hades' wife after being abducted to the underworld.
That of Persephone, Hades, and Demeter - as well as Adonis and Aphrodite and Persephone.
Demeter, Zeus, Persephone, Hades, Hermes, Iris and Apollo
Hades kidnapped Persephone, a daughter of Demeter and Zeus.
Demeter is also the goddess of harvest and architecture. She also is famous for her myth about how her daughter, Persephone, went into the underworld and married Hades.
Coins on the eyes of the dead
When Heracles fetched Cerberus, Hades was asked for the fierce hound. He and his queen are in the myth of Orpheus who attempted to retrieve Eurydice from the Underworld when she died. My last example is when Hades plays a role in the Demeter and Persephone myth, taking her for his queen.
They are most often associated with a myth, such as a screech owl was what the gardener of Hades, Ascalaphus, was turned into that bird for telling that Persephone had eaten food from the Underworld by Demeter. A white poplar was sacred for being the metamorphosed form of Leuke, a lover of Hades. Minthe was of that same origion as a lover of Hades who was transformed by Demeter or Persephone into mint. Most symbols are then crude memory cues for the myth involving certain gods and goddesses.
In the myth of Persephone, the climax is when Persephone is abducted by Hades and taken to the Underworld against her will. This event triggers the conflict between Demeter and Hades, leading to the negotiation for Persephone's return.