Queen Eva is a character who appears in the ABC fantasy-drama series Once Upon a Time. She is the wife of King Leopold and the mother of Snow White.
History
Queen Eva dies on Snow White's birthday after Cora poisons her. After her funeral, Cora explains to her that she was the one who poisoned her and she tried to make Snow White do something evil - a plan she will not abandon. It was explained that Eva and Cora knew each other when they were younger. Eva visits the kingdom of King Xavier, and she happens to notice a young Cora, who was the miller's daughter, in peasant garb delivering flour. For her own amusement, Eva sticks out her foot and trips Cora, causing her to spill the flour. She insults Eva, who is asked by King Xavier if she is alright. Eva states she is fine aside from the fact Cora has ruined her slippers. Cora is made to kneel and apologize, although the accident was not her fault.
In season three, it was revealed that Eva had been betrothed to King Leopold and Cora had tried to steal him away from her with her beauty and also after screaming for help after her former lover, Jonathan, abused and robbed her. Later on Eva reveals Cora as a harlot after overhearing a conversation with Jonathan and Cora, as Cora is pregnant and stole some jewelry from King Leopold, in order to hide her affair with the gardener. Eva marries King Leopold, while Cora is tossed out of his kingdom and gives birth to a baby girl not long afterwards, Cora abandons the baby apologizing to her, claiming she won't be her key to royalty. The baby is then sucked into a cyclone, and sent to Oz.
In Season 2, Snow White (cursed as Mary Margaret Blanchard) learns the truth of her mother's death from a sadistic Cora. After the Dark One's Dagger is surrendered to her, Cora kills Snow's old caretaker as a cruel way to show what following her mother's words gets her. This causes Snow White to seek vengeance on her former step-grandmother by killing her with the same object the latter offered her to save her mother. Snow regrets this action soon after the deed is done.
In the second half of season three, Zelena the Wicked Witch, Cora's firstborn daughter whom she had given up, wishes to rewrite her life. She intends to go back in time before Eva can expose her mother's pregnancy by killing her so she can have everything her half-sister Regina had that she was denied. This act would eradicate the existences of Snow, Emma, Henry; Eva's descendants; and Regina. Snow and David are then discussing the name of their unborn child as they don't know the gender yet. Snow suggests Eva after her mother, to which David asks how it would work for a son. Snow tells her husband that the baby might not be a boy, to which the baby is revealed to be.