John Constantine's early appearances in Swamp Thing, his past was a mystery; his life as a child and young adult was not developed until Jamie Delano Hellblazer stories. There, we found out that he was born in Liverpool, England, on May 10, 1953. His mother, Mary Anne, died giving birth to John and his stillborn twin brother because of an earlier abortion—forced on her by John's father, Thomas—had weakened her womb. Because he was unable to accept responsibility for his wife's death, Thomas blamed John and the pair grew up with a deep dislike for one another. Whilst in the womb, John strangled his twin brother with his own umbilical cord; in a parallel universe glimpsed in Hellblazer #40, the twin survives to become the well-loved and well-adjusted magician that John never was.
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