Demeter and Zeus did not marry, but did have the child Persephone/Kore.
Demeter had consorts, she did not marry.
None; Demeter had consorts and lovers but no husbands.
To marry her.
Demeter had a beloved daughter named Persephone that was forced to marry Hades.
Zeus is the brother of Demeter.
Demeter never married, she had consorts and lovers incuding Zeus and Poseidon, but did not marry.
She did not marry anyone, but had Persephone and several other children by Zeus.
No Hermes never married Demeter. Nor did they ever produce offspring together.
Hades kidnapped her daughter and force her to marry him.
Persephone, the daughter of Zeus and Demeter.
No, but he did have a affair with Demeter, his sister. With him she had Despoena and Arion.